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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 26 - Geometrical Optics > One of the refracting surfaces of a prism of angle 30^∘ is silvered. A ray of light incident at angle of 60^∘ retraces its path. The refractive index of the material of prism is

One of the refracting surfaces of a prism of angle 30^∘ is silvered. A ray of light incident at angle of 60^∘ retraces its path. The refractive index of the material of prism is

One of the refracting surfaces of a prism of angle 30^∘ is silvered. A ray of light incident at angle of 60^∘ retraces its path. The refractive index of the material of prism is