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A stick is placed inside a hemispherical...

A stick is placed inside a hemispherical bowl as shown in Figure. The stick is horizontal and has a length of 2a. Eye of an observer is located at E such that it can just see the end A of the stick. A liquid is filled upto edge of the bowl and the end B of the stick becomes visible to the observer. Radius of the bowl is R. Find the refractive index `(mu)` of the liquid.

A

`(7)/(4)`

B

`(5)/(3)`

C

`(3)/(2)`

D

`(5)/(4)`

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The correct Answer is:
D
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