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An insect starts moving up in a liquid f...

An insect starts moving up in a liquid from point O of variable refracive index `mu=mu_(0)(1+ay)` where y is depth of liquid from the surface. If u is the speed of insect, its apparent speed to the observer E is

A

`u In(1+aH)`

B

`u/((1+aH)mu_(0))`

C

`u/(In(1+aH))`

D

None of these

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The correct Answer is:
B
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