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rahul_c (188)

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Olaaa!! Perrrfect answer. 32  bad job dude!! I dont approve of this answer! 3  [52 rates]

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refractive index (n) = apparent depth/real depth

if displacement with respect to unit time is taken = (9/n)

actual velocity= (9/n) - 3

n is the refractive index of water

The yardstick of human intelligence is the ability to overcome the last fallacy
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