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in a water body, a point source of light is kept at a certain depth from surface.prove that the part of light energy that will come out of the water is--- (1/2)-(1/2n)(n^2-1)^1/2 where "n" is the refractive index of water.

in a water body, a point source of light is kept at a certain depth from surface.prove that the part of light energy that will come out of the water is--- (1/2)-(1/2n)(n^2-1)^1/2 where "n" is the refractive index of water.

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