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A point bulb is placed at the bottom of ...

A point bulb is placed at the bottom of tank containing liquid (refractive index=1.5) to a depth of 100 cm. The approximate area of the surface of water through which light from the bulb can emerge out is approximately equal to:

A

`22,500 cm^2`

B

`1,500 cm^2`

C

`25,100 cm^2`

D

`27,500 cm^2`

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