Math, asked by abhayasanyal6, 1 year ago

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 at a distance b=10cm from the corner D. What minimum depth of water should be poured into the vessel which will enable the observer to see the object?(refractive index of water=4/3)

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Answered by sanphys

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