A disc is placed on the surface of a pond filled with liquid of refrac – InterviewSolution

1.	A disc is placed on the surface of a pond filled with liquid of refractive index 53. A source of light is placed 4 m below the surface of the liquid. The minimum area of the disc so that light does not come out of the liquid into air is about
Answer» A disc is placed on the surface of a pond filled with liquid of refractive index $\frac{5}{3}$ . A source of light is placed 4 m below the surface of the liquid. The minimum area of the disc so that light does not come out of the liquid into air is about

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