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A ray of light falls on the surface of a spherical glass paper weight making an angle (alpha) with the normal and is refracted in the medium at an angle (beta). What is the angle of deviation of the emergent ray from the direction of the incident ray.

A ray of light falls on the surface of a spherical glass paper weight making an angle (alpha) with the normal and is refracted in the medium at an angle (beta). What is the angle of deviation of the emergent ray from the direction of the incident ray.

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Grade:11

1 Answers

Arun
25758 Points
4 years ago
Dear Yash
 
If you draw the diagram, then you will see that
 
Delta = (alpha - beta) + (alpha - beta)
= 2(alpha- beta)
 
Regards
Arun (askIITians forum expert)

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