InterviewSolution
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InterviewSolution
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A fish under water observes a freely falling stone in air . If the refractive index of water is ` 4/3`, what is the apparent acceleration of the stone as observed by the fish? |
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Answer» (i) Let `h_(1) and h_(1)^(1)` be the real and apparent height of the stoneat t = 0 s. Let `h_(2) and h_(2)^(1)` be the real and apparent height of the stone at t = 1 s The real distance travelled ` S = h_(1) - h_(2)` Apparent distance travelled `h_(1)^(1) -h_(2)^(1) = S^(1)` ` mu = h_(1)/h_(1)^(1) ,h_(1)^(1) = h_(1)/mu and h_(2)^(1) = h_(2)/mu ` Use the relation ` s = ut + 1/2 at^(2)` In both the cases, determine the apparent acceleration. (ii) ` 13.1 ms^(-2)` |
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