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Figure shows the path of a light beam in an isosceles prism with apex angle `delta=60^(@)` (inside the prism beam is parallel to the base). Find the angle of deflection in degrees. The refractive index of prism material is `1.732` |
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Answer» Correct Answer - `0060` Beam is parallel to base Rightarrow mm deviation `mu=sin((delta+y)/2)/sin(delta/2) Rightarrow sqrt(3)=sin((60+y)/2)/sin(60/2)` `sin((60+gamma)/2)=sqrt(3)/2 Rightarrow(60+gamma)/2=60 `gamma =60^(@)` |
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