When the angle of incidence on a material is 60∘, the reflected light is completely polarized. The velocity of the refracted ray inside the material is (in ms^−1)

When the angle of incidence on a material is 60, the reflected light is completely polarized. The velocity of the refracted ray inside the material is (in m/s)

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A light ray enters a solid glass sphere of refractive index μ = √ 3 at an angle of incidence 60°. The ray is both reflected and refracted at the farther surface of the sphere. The angle (in degrees) between the reflected and refracted rays at this surface is ....

A ray incident at a point at an angle of incidence of 60∘ enters a glass sphere of refractive index 3–√ and is reflected and refracted at the farther surface of the sphere. The angle between the reflected and refracted rays at this surface is