Question

20. Refractive index of water and glass are 4/3 and 5/3. A light ray is going to water from glass. Then, its critical angle will be: O sin-1(2/1) O sin-1(5/6) O sin-1(4/5) sin-1(1/2) Required​

Answer 1

Answer:

At critical angle, the ray of light entering water from glass would be refracted at 90∘.

From Snell's law,

μgsinic=μw

⟹sinic=μgμw=54

⟹ic=sin−1(54)

Explanation:

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