a ray of light is refracted through a Prism of angle 60 degree find the angle of incidence so that the emergent ray grazes in the 2nd face.( refractive index of the material of the prism is 1.45°)
Sudip , 7 Years ago
Grade 12
1 Answers
Jay vadolkar
Last Activity: 7 Years ago
Here
=sin{30+Dm/2}/sin60/2
=sin{30+Dm/2}/sin30=√2= 1.414°=>
Sin{30+Dm/2}=1.414×(1/2)=1/√2
=>30+Dm/2=sin-1 (1/√2)=45
=>Dm/2=45–30=15=>Dm= 30°.
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