Question

a ray of light is incident at an angle of 60 on one face of a prism of angle 30.the imergent ray of light makes an angle 30 with incident ray. the angle made by imergent ray with second face of prism

Answer 1

All the angles should be in degree

For  a prism of angle of refraction A , the angle of deviation for an angle of incidence i is given by, δ=i+e−A

The angle of incidence i = 60°. Angle of prism A = 30°. Angle between incident and emergent ray is called angle of deviation, δ = 30°.

Using Snells law

In the triangle , Angle at which it emerges is 90°.

i hope it will help you

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