A ray of light from a denser medium strikes a rarer medium at an angle – InterviewSolution

1.	A ray of light from a denser medium strikes a rarer medium at an angle of incidence (i) as shown in the figure. The reflected and refracted rays make an angle of 90∘ with each other. The angle of reflection and refraction are (r) and (r′) respectively. The critical angle is-
Answer» A ray of light from a denser medium strikes a rarer medium at an angle of incidence $(i)$ as shown in the figure. The reflected and refracted rays make an angle of $90^{\circ}$ with each other. The angle of reflection and refraction are $(r)$ and $(r^{^{'}})$ respectively. The critical angle is-

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