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when a light ray enters a refracting medium ,it is found that magnitude of the angle of refraction is equal to half the angle of reflection.if n is the refractive index of the medium ,find the angle of incidence.why is the refractive index of medium 1 taken as 1 here?

Answer» when a light ray enters a refracting medium ,it is found that magnitude of the angle of refraction is equal to half the angle of reflection.if n is the refractive index of the medium ,find the angle of incidence.why is the refractive index of medium 1 taken as 1 here?


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