A point source of light is kept at a depth of in water of refractive index 4/3. The radius of the circle at the surface of water through which light emits is |
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a) |
b) |
c) |
d) |
A point source of light is kept at a depth of in water of refractive index 4/3. The radius of the circle at the surface of water through which light emits is |
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a) |
b) |
c) |
d) |