Rising Stars
Classical Mechanics
Level
pending
A certain star appears to rise from the east at 9.30 pm on a particular day . From the same place of observation after 25 days the same star appears to rise from the east at about ?
Source: NSEA 2014
11.10 pm
8.05 pm
9.30 pm
7.50 pm
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1 solution
Every day rise of ☆ is delayed by 4 minutes due to revolution of earth around the sun ;so the delayed time becomes 2 5 × 4 = 1 0 0 minutes that is 11.10 pm..