Attention
I, Rahil sehgal and Ankit Kumar made an whtsapp brillliant group. Interested persons can provide their whatsapp number. I will add you all
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Md Zuhair
4 years, 2 months ago
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@Md Zuhair
The exact answer is y=hcos((lf)x)
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Oh so we need to find out the exact path of ray. I thought approximation would work
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Ya
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https://brilliant.org/problems/when-einstein-meets-huygens/
I have solved this , but I want to know if there is any better solution than what i have done ! Help me.
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Can you give me hint as to how you solved? I tried using Snells law. Didnt helped. (Im sorry.. but can we even use snells law??)
?
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You can search Gravitational Lensing , that will give you the whole thing . I did it by finding the divergence of potential method.
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I am actually searching for a simpler solution
What did actually happen to saved sets??
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Unfortunately, brilliant has removed them. I don't know whether this feature will come back . For further enquiries, you can mail the Brilliant staff.
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That was the best feature of brilliant :(
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Exactly!! :(
There is now an option named as "Saved" below the notification panel. I hope you'll find your saved sets there. Check it out!
+2348103182839...Please add me to the group.. I will be very happy
@Md Zuhair @Rahil Sehgal @Ankit Kumar Jain - I also want to join. Please add me.
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Pls comment your contact number below so that I can add u. :)
hey, help in this one https://brilliant.org/problems/getting-back-to-the-old-things-6/?ref_id=1368848 thanks in advance. give me some hints as usual(Which i ask from u from 11th :P)
@Rahil Sehgal what all will you discuss in the group
Please comment if you got it.
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Thanks...
I have added you in the group
Thanks.
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https://brilliant.org/problems/too-many-lenses/?ref_id=1559097
Can you help me with this problem ? You don't need to provide a solution, a hint will work for me.
Thanks in advance.
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Use the concept of deviation caused by a convex lens. A ray of light reaching the lens at a distance 'y' from the optical axis suffers a deviation of delta=y/f . Now, the lenses are seperated by distance l by which you know the rate of change of slope which is delta/l. Set up the differential equation and you would get the result. @Richeek Das
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Thanks a lot. I didn't know that deviation formula ∆ = y/f . Did you just derive it while doing this problem?
Are you in FIITJEE too?
Thanks again!
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Okay , I got the the deviation angle , you don't need to explain it further
Yes...I am from FIITJEE BHILAI
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Hey, how are you?
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Nice to meet you ! I am from FIITJEE North Kolkata btw
Fine. Opened brilliant after a long time .My mail was bombarding mails from brilliant.
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Hmm, I have been opening for a week now. Please give link for some awesome question u find here... Which u r solving
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How was your mains??
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Not that good my friend. :(
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Why bro? Overall how was your JEE ? This time the paper was easy thats what I got to know. But still there are some mixed reviews. Anyways you have another chance on April & all the best for Boards bro!
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Scoring mere 230/350 :(
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I guess your rank will be around 1600-4200 :''''''''''( ......Its okay, you have another chance bro to get a better rank in mains! And study harder for the one in April. Trust in yourself and stay motivated :)
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Thats a lot for me! I will be happy with that rank. Still preparing for April. Lets see....
I could have got 260. But very silly mistakes brought me down here. Never mind :(.
Still...
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if it's alot for you then why are you sad -_-
it's okay... Learn from your silly mistakes! And cheer up now bro, move on n get ready for April.
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What was ur score in JEEM?
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I didn't give JEEM 2017 :( it's a long story! Anyways leave it as it doesn't matter.
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ok sure ...
Last yeat IISc cutoff was 230.. So i have little chances of getting into IISc.... Lets see.
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Woahhh! You're all set :P
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Arre last year paper was difficult also :P.
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IISc cutoff was really 230 for general ??????? For some year I had seen the cutoff go as high as 325 . Where am I going wrong ?
Can you clarify?
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No. What u r talking about is direct admission... For 230s... They have to give interview.
And i guess it was 230 only.... For OBC.. it was 198
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Whatever it is, you gear up for JEEM ON APRIL. 230 is really good. Getting 200+ isn't easy.
It was 250 last year! That's what they're showing on Google. Google it!
Ohh No wait. That's the cut off rank 250.
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Ohhh hahha. I see.. then I've no chance
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Who said you have no chance? You have chance toh! The one in April is is your hand, kill it there! And honestly 200+ isn't okay, it's really good bro.
Yes that's what I'm talking about!
You still have a lot chances bro ! 4 months make a huge impact!
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I agree with Richeek! You still have it in your hand bro. Rock it in JEE April one and JEE Ad .
I saw OBC people WITH CRL of 5000 is eligible for IISc. Why so much for OBC? I mean... general 250 and OBC 5000???
I don't know. Reservation sucks :P
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Actually :P
I know far far far better people than me landing up at 230 s .... I mean... They had AIR 156 in KVPY SX. They were really awesome.... So I am not that sad too... still... lets see.... Well JEEA is the real game.
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That's true! Proud of you bro :') Kill it in JEE advanced ;)
Yours? How much are you expecting?
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@Md Zuhair I spoiled it by lots of silly mistakes + stupid calculations (even (sinx)^2+(cosx)^2+1=3) .....expecting border 300.
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Similar mistakes from me too.... But ur score is awesome. What about thomas?
What is your final percentile ? @Md Zuhair @Aaron Jerry Ninan
I'm getting around - 99.9633219 percentile ! I was pretty shocked :( I had expected much better as my marks was 319 .
I have solved this one , but I would really like to hear the way you had solved it ! https://brilliant.org/problems/when-einstein-meets-huygens/
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My Percentile is not as good as urs. But approx 99.6 :(((((. Well help me in this plz Anyone https://brilliant.org/problems/getting-back-to-the-old-things-6/?ref_id=1368848
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Wowww :P Congratulations! @Md Zuhair @Richeek Das
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Richeek really got awesome Percentile. Myne is a bad one.
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-------__------ Your one is also great!! Do you want me to write a paragraph explaining how good your percentile is ? :P Anyways, move on with it and focus on what's coming next!
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If there is student like Richeek, one whole paragraph on 99.6 percentile would be an insult to him...
He is legendary :P
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Richeek has definitely done very well, no doubt about that. I can't even dare to insult him! I am so proud of you Richeek :P But @Md Zuhair you also did well and I am proud of you as well :P
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KI HOCCHE TA KI
XD
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SHURU KE KORLO XD
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Sotti ki hocche eta -_- But still I expected~100 rank with 319 marks.
If I get 99.6 percentile in JEE Main January and again 99.6 percentile in JEE Main April, then due to different number of students appearing in two shifts,My AIR will be different,How will NTA then normalize this?Will they combine AIR of both or the NTA score ?Wouldnt it be unfair if they combine NTA score(for merit list) as the total students appearing will be different.
@Richeek Das @Aaron Jerry Ninan @Thomas Jacob @Ankit Kumar Jain .... HELP! :p
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The total number of students appearing for JEE Mains 2019 will be the maximum of the number of students appeared on Jan and appearing on April. So your AIR won't be different as the total no.of students is the maximum appearing from the two shifts. Basically if 3 lacs appeared in Jan and 3.1 will appear in April, your rank will be out of 3.1 lac students and not 3 lacs. That is the reason they haven't revealed the rank after JEE mains Jan and so have decided to release the rank after JEE mains April. They won't combine your rank or anything from the two shifts. This is what I can guess with logic as of now :P
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That implies, Most probably my rank would degrade :P
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Your best percentile will be taken from the two shifts. AIR will depend on the number of students appearing for JEE Mains April, you have time so it's in your hand :P
If this is really the case then, this is the worst system ever devised for an examination of this scale. Are they treating it as a joke or what :O BTW, I won't even appear for April JEE Main :P
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Really. You are correct. Number of student changes but still :((.... I dont see any intelligent work or mathematics in it
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I guarantee that this system will get removed after 2019
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It seems nonsensical... I mean... two JEEM system is okay... But this percentile normalization is bogus! I mean they set our percentile as per JEE Mains Jan version and then they use it for JEE Mains April(Where no. of studs are diff..), Now we are ahead of certain amount of students which gives us our percentile. What is the guarantee that our percentile wont increase if more students gave? It might be that the extra students who are giving are not giving JEE seriosuly!! Isnt it?
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I really couldn't care less.
Just ended my journey of Physics olympiads.... My score in INPhO - 41.5 Cutoff - 42
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Arreehhh!!! How is dat possible!!!
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Tamyojit ero tai Bad luck I cannot accept this :(
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Ik... Ekdom same.. tui tamajit er ta ki kore janli?
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North Kolkata fiitjee toh ami, bondhura bollo.
Oro dukkho hoyegache ? :(
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Obviously.... dukkho nahole he is a robot not a human being. Jemon ami ei bochor KVPY miss korlam by 0.5 marks :(... Just a very sad ... very sad life... Amar AIM oitai chilo.. ki crack KVPY ... to gain some confidence .. karon i have 0 self confidence...
My self confidence is in negatives then. What about Aaron Jerry Ninan ?
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Just tag hin to ask. And no... You know u r far more better than me.. still ur making fun of me.. JEEM Percentile says all
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Confidence is relative to the viewer na.....
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:p What?
--------__--------
Such talented people! Much wowww :O btw you all are just increasing my notifications lol!!
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Newspaper e naam beriyeche. Telegraph page 5. Also in anada bazaar. but percentile given there is bit incorrect (:((()
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Whoa congrats bro!
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Arre... Congrats er kichui nei. Tumi Aakash r porle tomar naam second e hoto :P
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Dekhlam Tor naam! Tamyojit fiitjee r student na? P.S - Don't use "Tumi"
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Hya Tamajit amar schoolei pore. Oke bhalo bhabei chini. Khub brilliant :)
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Yes Fiitjee north kolkata r student ra bole je o ar Angikar khub bhalo
Woahhhhh! Congratulations !!!!!!!!!!!!!!!! I didn't see the newspaper today but will see it right now. It's your day today:P Proud of you!!!!!!!!!!!!!!!!!!!!!!!
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@Md Zuhair Bro :''''''''''"""'"""""""""((((((((
@Md Zuhair Bro see what I found https://epaper.telegraphindia.com/calcutta/2019-01-25/71/Page-5.html
@Md Zuhair Bro yyyyyyyyyyyyyyyy^(infinity) didn't you reply? -----__-----
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Sorry... Extremely .... My bad. Thanks for congrats.
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-----------___-----------
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Arre sorry sorry. Telegraph, ABP, Bartaman sobei diyechilo i guess... Well thanks :). But there's a lot left! :(
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Definitely there's alot left and I am sure you will rock it in them as well :P Kill it like always xD
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Now dont make fun of me :P. I really couldnt do good in JEEM 2019 like my friends who use to score similar marks in All India test series.... Still i am thankful to god for what i got :) ...
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I am not making fun of you -_- How can I make fun of such a talented person? And why are you comparing yourself with your friends? I still remember how you were once giving me advice on not comparing xD
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:P .. O ... Ok.. lets see
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I know you'll rock it all :P My predictions work you see xD
Yeah, you should be thankful and grateful! Now look forward to Boards and JEE Ad, you need to rock it there as well :P Study hard!
@Md Zuhair @Rahil Sehgal - Can you please add me to the group too?
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You can comment your contact number below. Thanks.
Would you please add me too ,my number is 8547853228
What kind of group is it ? Formal one for physics and math problems ?
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Kind of.....
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Ohh okay!
Quora misses you bro ;) How's your studies going? Also, tell me how are you motivating yourself everyday? And not to forget only one day left for this year to end LoL xD
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Well lets see... :)
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Okay study harder bro!
Happy New Year!
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Happy new year!!!!
@Md Zuhair You used Quora from another account LOL xD There was no point in deactivating your own account then LOL ... This is so funny! Also, do you really know Prakhar Bindal? You yourself answered that question, right? The writing pattern was similar to yours. And study hard for Boards, All the best!
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Haha... I opened it after JEE na... so it had point.. As i used to read how others gave the exam and what answer keys were faulty by NTA. After that i deleted it a few days ago i guess.. I deleted the account. And Yes... I know prakhar bindal persoanlly... and i didnt knew i was so famous :P..... Well.... Akhon abar shob deleted... Chap nei... chere diyechi oi shob :P...
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LOL you can definitely use it whenever you want to :P Haha you're so famous already xD
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Where am i famous? Rastai nijer family member e chinte pare na... They avoid me i guess...(Bhabe... er kache gele amar cheleo fail o korbe..:PP. )
Well... i took decision of deleting it again as i had the similar experience as i had with the previous one. So i deleted this also. I guess will open after JEE agian.
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Eto bhaat keno -- nijer family o Cheney na seriously STOP -- It's okay open it whenever you want to, no one will force you it's your life , you have the freedom to do whatever you want to LOL
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Arre.. :P Moja korchilam.... Ar ami nijer eacche tei bondho korechi.. emnio onno keo bolle ami mantam na... Jokhon nijei mone hoy onek hoye geche.. so stop
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That's great :P I can see how super famous you're going to be :O
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Uriye nao moja :P
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So now study hard and again come on the newspaper! Not joking this time :P All the best!
First duto line seriously hojom hochchena -__- Heights of sarcasm xD I will be too deleting my account soon, will be back on July because I have my finals on June. Till then you'll be super famous, your name again on the newspaper :P Ar koto famous keu hote pare :P
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Moja uriye dile.... :P...
What what everyone is becoming famous? We are washing clothes in our house :P
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LOL define the domain of everyone!! Btw how was the physics paper? I got some mail from you regarding the physics paper. Good to see you back on Brilliant after a long time. Also do you know that Brilliant has deleted it's Slack Team?
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LOL that wrong mail went to everyone, I misclicked some link and it has gone perhaps everyone and even modi:P My paper was good :P
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LOL that is what I was wondering :P I mean how can your physics paper go bad?! Brilliant students don't ask for being lenient :P
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No no, tragedies did happen in the maths paper 2-3 years ago, even Brilliant bros were crying.
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Yeah I know but usually such links are fake . And CBSE will definitely take measures if something really goes wrong.
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Around 60,000 students have signed the petition since tuesday!! World record.
This is how I got to know all this:
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This really happens almost every year. Some people create more mess and chaos regarding this. Conclusion : No one trusts the education system of our country, sad reality. No one knows who to be blamed for the paper going bad, students for not studying or CBSE for making an unusual paper.
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Myne went ok. i can say.. :( .... Not tht good... Even our Brilliant topper Ankit Kumar Jain said that he faced certain difficulty.
Btw, @Swapnil Das... How was your JEEM?
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Your "not that good" means above 90% :P Like your "zero confidence" means high level confidence! Such an exception :O
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What?! When did that happen :P ?
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When results will come out you'll know it all :P All the best!!
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Hey were you CBSE? How are marking done? Do we get more than the expected marks or less?
Are you still adding students ? BTW I'm a JEE aspirant and I'm quite new to brilliant(Using it just for 1-1.5 months)
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+919903607651
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no bro... actually i deleted Whatsapp 6-7 month before :P
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Me too , thats my mom'd :p Btw , we can be friends !
Obviously. Friends with toppers like you would be a nice thing Id love to
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What do you mean by "topper" ? -_- Do you even know me ?
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your credentials say all :)
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That's nothing much I guess :p I see you are in South Point! I stay in Kolkata(30kms from it though) too ! I am in North Kolkata Fiitjee.
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Arre... Then I know you. I have a friend named Rishav Dugar. He said the you are the smaller version of Arka Das. So I know you that you are a topper!!!
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:( Unfortunately people think that . I am nowhere close to him .
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But u defeat him in some exams.
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Defeat"ed" in some .My Exam temperament is completely broken , nowadays :(
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https://brilliant.org/problems/too-many-lenses/?ref_id=1559097
please help me with this!
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I tried it this way. Taking the lens to be thin. I found the number of lens it will overcome until it reaches 3.925cm . Now taking the equivalent of all those lenes we ge the point where the ray would have passed if there were no further lens cutting the principal axis (focal pt) . Ebar....Using perpendicular/base.... =Tan theta(theta is angle b/w ray and principal axis). We can find out the height. If I am wrong somewhere.... Plz correct me. My answer is not matching.
@Richeek Das @Md Zuhair bro could/can you solve this ? https://brilliant.org/problems/tetrahedron-impedance-planar-network-what-is-the-2/. If so, are you using the standard approach to solve this? Or there's any trick?
@Nashita Rahman No i dont have them even in the 'saved' section. :(
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Ohh NO :( Try mailing the brilliant staff about this, they might help you to get back your sets.
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It seems impossible to get them back i guess :((((.... I had a set with doubts which I had to ask to my teachers.. Its lost!
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Please don't start crying :P I know it's sad but what can you do now? Just mail the brilliant staff regarding this as simple as that !! And how are you? All is well? XD
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All is well nahi,Aaal iz well :P... Well.. I Lets see, Prep going on(Mostly Boards)
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You had to bring "3 idiots" in between :P ... Good luck with your prep and keep going, you're doing well.
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Thats my fav. film. After that, I got Inspiration to do Engineering as i found machines impressive and interesting. And that inspiration is working now also... Lets see where this inspiration ends me up
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Yeah I know that it's you fav film :P (You've mentioned it somewhere) .... That's really awesome. Inspiration always leads to something great, I am sure you'll end up doing something great.
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They didn't reply and Calvin Lin said that he has left Brilliant.
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WHAT!! Calvin left!
SERIOUSLY -_- CALVIN SIR CANNOT LEAVE :""""'(
They will reply, in like two days. Usually Karen Sir replies. Are you sure Calvin Sir left? :'''''(
UUUUUUUUUUU MUST BE MISTAKEN he hasn't left Brilliant!!!!! I just checked it. Who told you he left Brilliant?
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No no no no !!!!!!!!!!!!!!!!!!!!!! HE has not left brilliant ! Man!
What he replied : "Hi,
I am out of the office. For YouTube and sponsorship matters, please email Tara Kappel at [email protected]. For anything else, please email [email protected] and cc me.
Thanks."
I am extremely sorry!!! I really don't know why I said that "he has left Brilliant". I really really don't know !!!! Seems like I was high.
I am sorry
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Topper like you go high after getting into IIT. One of our sir from Aakash is from IITKGP Mechanical. And he said.... CS waalo sab se zyada high rehta hai.... As they have really tough assignments and tough work... So they go high for some time
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HAHAHAHAAAAHAAAA !!! If this is the reason for going high tab toh bach ke raho CS waalo se :P Not to forget, you're also a topper toh :P
I MUST SAY THAT YOU BELONG TO JUPITER! People or rather aliens from Jupiter go high like this. Happy journey and stay on EARTH.
Jokes Apart, you should be sorry -_- . Calvin sir is one of the most important part of Brilliant, he can never ever leave brilliant. I am here on brilliant since six years though not really an active member but I have seen tremendous contributions of Calvin sir to Brilliant.
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Different level of highness
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Yes I know that too ! He has made huge contributions to Brilliant ! Sorry ! I apologise :(
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It's okay! No worries.
Not highness but my sense of humour which is poor!
Hey.... We know that at freezing point.... The liquid is in equilibrium with the freezed solid. How can we calculate how much water has freezed?(Random qs.... It just came to my mind..... Idk :P)>> is it the same way we do for others... Like we need alpha and K?
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In case of pure water, the whole of it will convert into ice at its freezing point. If there is any impurity in the water then the amount that has freezed can be calculated using Kf provided del Tf ( which says whether the freezing point has decreased/increased) is given. I hope it is clear?
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Ya, But why do we say there's a dynamic equilibrium if whole of the pure water converts?
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At freezing point, water starts to freeze then the temp will change only when whole water is converted to ice. Water freezes at the same rate as ice melts that's why there's a dynamic equilibrium . In my previous comment, I wrote that whole of it will convert into ice at freezing point was a mistake, sorry.
Who will create the INO 2019 PAGE????
@Aaron Jerry Ninan How was your INPhO 2019 ? Did you get through ?
@Md Zuhair Yes I am from CBSE board, the marking is alright but getting above 95 isn't easy at all!!! If you've solved the ten years questions then you must be knowing the question pattern . I can't say whether you'll get more or less than your expected marks because it depends on many factors like who will check your paper, a strict/lenient teacher and all other factors. Just study hard and give your best!
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Ok. But what happened with you? More than expected or less?
Congratulations!!! @Md Zuhair And all the best for JEE Advanced!!
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for what? -_-
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What else can it be? -----_-----
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Still 262 te 99.7 percentile seems underrated
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No comments. I am seriously not going to judge your marks and say whether it's underrated or not.
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-_-... Anyways... I guess I can apply for IISc as per last year's cutoff. But I won't be applying as I don't want to study basic science anymore after missing KVPY by just 2 marks :(
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You missed KVPY by two marks :"""( That's sad, but it's okay, you still have other good opportunities in hand . Rock it in JEE Advanced xD What will you pursue? Engineering?
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I guess yes. Engineering. :) .. preference wise... CSE,MnC,ECE,EE. (MnC is mathematics and Computing)
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All the best!
@Md Zuhair All the best !
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Lol.... Tokeo all the best... Can u help me in one of ur qs?
That solubility of Ag3PO4 ta... How to approach that bujhte parchi na
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Why are you loling -_- Hint : Use POAC for [PO4 3-] (initial) and overall and find the phosphate ion concentration roaming around in the solution...
PO4 3- + H2O ---> HPO4 2- + OH- . . . I guess you know that approach.
Heyy! How did you perform in JEE? What's your AIR? @Richeek Das
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Don't even ask :( ........Screwed with AIR 497:(
I didn't appear for April one so i guess that might be the case :(
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WOWWWWWW CONGRATS !!! IF YOU'RE NOT HAPPY WITH AIR 497, I REALLY HAVE NOTHING TO SAY -_-
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Tbh, I never cared about JEE Mains, so I don't care about it even now :/
P.S : The rank is bad.
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LOL why didn't you care about JEE ? Do you have any other career plan ? Also, trust me AIR 497 is an amazingly amazing rank, you should definitely be proud of yourself, it's an achievement. Once again, congrats!! All the best for JEE ADVANCED!
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I didn't care about Jee main*(You can also read "I hate JEE Main). Thanks though :)
Advanced is my target and KVPY was my target.
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LOL calm down and don't hate JEE please, hatred is too heavy xD How did you do in KVPY? What will you pursue? Rock it in Advanced xD
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he rocked KVPY also... although he will go for CSE i am sure
i got 92% in boards btw :P
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WOW! PROUD OF YOU LIKE ALWAYS! Congratulations once again :P
P.S. I have final exams from 3/6/19, I am going offline for 2 months. Hopefully I will survive without internet :"""(
Congratulations ! How are you so sure that I will pursue CSE -_- . I love physics a lot more than CSE. Tbh -
+I don't know whether I can live with little or no social life in IISc :/
+Literally everyone will force me to join IIT if I manage to get one :/
I will discuss with some IISc students about their lives in there and then I will decide.
P.S - My parents won't force me ever.
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Ok.. but most of the cases.. I see KVPY SX toppers or even qualifiers go for IIT .. and you will get to learn physics in ECE or EE.. so you can take that up.. because thats based upon physics totally... CSE is kind of something else ..... not what we did for JEE till 12th.. but its something very different
@Md Zuhair I will either go for CSE(if i get it) or IISc(for physics).
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Oh.... but why CSE?
@Md Zuhair Because I like both physics and CS. Mane janina, ki bolte chaichi. Chaar bhai, agey toh Advanced hok XD
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tui ISI diyechilis re?
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Nope, amar dara maths hoyna
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H ac ha -_-
@Md Zuhair add me in that group please...I had message you in quora ok please bro
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we are not in that group anymore :)
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Ooo.. ankit jain was in that group ?
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Yep, now no more group
Any new group ?
@Richeek Das
Bhai eta try kortoh... tell me if the answer is correct
https://brilliant.org/problems/600000-points-problemfor-jee19/?ref_id=1569043
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Bapre pore korbo
Hey zuhair, we have isi interview on the same day... 18th June... I wanted to know.... How many subjectives did you solve in the UGB?
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ohkay....i solved 4.5 qs at UGB and got 97/120 in UGA
how are you preparing for this? Please help
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Oh... So I've enrolled in "cheenta" they are providing mock interviews ...i know it's quite unnecessary but still I don't want to leave a chance.
And yes I didn't pay full fees The full fees included written exam preparation. I paid only for mock interviews
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ohkay... how they take interview? and can you please help me with some qs they give? please :P
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https://brilliant.org/problems/isi-interview/
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Hey lets make a contest of ISI interview with question sharing? Would you like doing it? I will send you a link shortly... with all the rules.. just wait.. :D
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okay
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https://brilliant.org/discussions/thread/isi-interview-experience/
Till then, this could help you
https://artofproblemsolving.com/community/c260h1847186p12443026
i believe the interviewer wont ask very tough questions, they would just check basic understanding of number theory , calculus, pNc,etc and some problem solving skill.