Q.

A mango tree is at the bank of a river and one of the branch of tree extends over the river. A tortoise lives in the river. A mango falls just on the tortoise. The acceleration of the mango falling from tree as it appears to the tortoise is (refractive index of water is 4/3 and the tortoise is stationary)

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a

g

b

3g/4

c

4g/3

d

none of these

answer is C.

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Detailed Solution

x1=xrelμ⇒xrel=μx d2xreldt2=μd2xdt2 ⇒arel=μg=4g3
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A mango tree is at the bank of a river and one of the branch of tree extends over the river. A tortoise lives in the river. A mango falls just on the tortoise. The acceleration of the mango falling from tree as it appears to the tortoise is (refractive index of water is 4/3 and the tortoise is stationary)