A ray of light is incident at an angle of incidence , on one face of a prism of angle (assumed to be small) and emerges normally from the opposite face. If the refractive index of the prism is , the angle of incidence , is nearly equal to |
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A ray of light is incident at an angle of incidence , on one face of a prism of angle (assumed to be small) and emerges normally from the opposite face. If the refractive index of the prism is , the angle of incidence , is nearly equal to |
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a) |
b) |
c) |
d) |
(a) For normally emerge Therefore and Snell’s law for incident ray’s For small angle |