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Wave Optics
Question
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Answer the following questions:
A diver under water, looks obliquely at a fisherman standing on the bank of a lake. Would the fisherman look taller or shorter to the diver than what he actually is?

Answer

The fisherman will look taller to the diver apparently. When the object is in rarer medium and the observer is in denser medium, then the “apparent depth” is greater than “real depth”. 

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