An equilateral glass prism has a refractive index 1.6 in the air. Calculate the angle of minimum deviation of the prism, when kept in a medium of refractive index 42/5. ??
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Explanation:
When the prism is kept in another medium. we have to take the refractive index of the prism with respect to the given medium:
μprismmedium=μprismμmedium=sinA+Dm2sinA21.6425=sin60°+Dm2sin60°22=sin60°+Dm212sin-112=60°+Dm290°=60°+DmDm=30°
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