A disc is placed on a surface of pond which has refractive index \frac{5}{3}. A source of light is placed 4 m below the surface of liquid. The minimum radius of disc will be so light is not coming out

AIPMT 2001 Physics and Chemistry Paper

Question : 21 of 100

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A disc is placed on a surface of pond which has refractive index

. A source of light is placed 4 m below the surface of liquid. The minimum radius of disc will be so light is not coming out

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