InterviewSolution
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InterviewSolution
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A ray of light is incident at `60^(@)` on one face of a prism of angle `30^(@)` and the emergent ray makes `30^(@)` with the incident ray. The refractive index of the prism isA. 1.732B. 1.414C. 1.5D. 1.33 |
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Answer» Correct Answer - A (a) As, A+ `delta`=i+e `rArr 30^(@) + 30^(@) = 60^(@)` + e Angle of emergence , e=`60^(@)-60^(@)`=0 `r_(1)=A=30^(@)` `therefore` Refractive index, `mu=(sin i)/(sin r)=sin 60^(@)/(sin 30^(@))=sqrt3=1.732` |
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