A ray of light travelling in air falls on the surface of a
rectangular slab of transparent material whose
refractive index is root3. If the incident ray make an
angle 60° with the normal, then the angle made by
the refracted ray with the normal is
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We know that refractive index of air is 1Here the incidence angle is i = 53^o Using snell's law nairsin i = nglasssinr sin 53 = 1.6sinr 45 = 1.6sinr r = 30^o
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