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a glass priswm has mue=105 and the refracting angle is 90 degrees.if a ray falls on it at angle of incidence of 30 degrees then the angle of emergence is - explain with clear steps.

a glass priswm has mue=105 and the refracting angle is 90 degrees.if a ray falls on it at angle of incidence of 30 degrees then the angle of emergence is - explain with clear steps.

Grade:9

1 Answers

Aziz Alam IIT Roorkee
askIITians Faculty 232 Points
9 years ago
The refractive index is n=1.5 (you have written 105, but I think so its 1.5.Let me know if I wrong.Either way you can figure if it is 105)

critical angle is ic=sin-1.667=41.80
If the incident angle is greater than this then there is total internal reflection.
Given , angle of incidence is 300
sin(i)/sin(r)=1/1.5
then
sin(r)=1.5*0.5=.75
angle of refraction(r)=48.590

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