Question

When two mirroes are inclined at an angle of `60^(@)` with each other, find the glancing angles and angle of deviations at both the mirrors if the angle of incidence of a light ray is `45^(@)` . Draw its ray diagram.

Answer 1

`i_(1)=r_(1)=45^(@)`
`i_(2)=r_(2)=15^(@)`
Glancing angle at `M_(1)=90-i_(1)=90-45^(@)`
`" "=45^(@)`
Glancing angle at `M_(2)=90-i_(2)=90-15`
`" "=75^(@)`
Angle of deviation at `M_(1)=180-2i_(1)=90^(@)`
Angle of deviation at `M_(2)=180-2i_(2)=150^(@)`