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A point source of light is placed at the...

A point source of light is placed at the bottom of a water lake. If the area of the illuminated circle on the surface is equal to 3 times the square of the depth of the lake. The refractive index of water is

A

`sqrt(pi+1)`

B

`sqrt(pi/3+1)`

C

`pi/3+1`

D

`pi/4+1`

Text Solution

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The correct Answer is:
B
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