The angle of incidence of light ray incident on equilateral triangle prism is 40 degree. If the ray is just totally reflected at the other face of the prism then find the refractive index of prism.
Added by John W.
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This means that the angle of incidence is equal to the critical angle. The critical angle is the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense medium are no longer refracted but totally reflected. The Show more…
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