Let me show you the real optics
A cubical vessel with opaque walls is so placed that the eye of the observer cannot see its bottom but can see the entire wall CD . A small object IS placed at O (O is 10 cm away from corner D)what minimum depth of water should be poured to enable him to see the object clearly?(n=4/3)ANSWER IN CENTIMETE
The answer is 26.7.
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1 solution
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