Question

As shown in the diagram, the light ray is approaching the first mirror at an angle of 45° with the mirror surface. Net deviation suffered by ray is​

Answer 1

Physics

Ray Optics

Answer :

Formula of deviation suffered by light ray is given by

• δ = 180 - 2i

where, i denotes angle of incidence

See the attachment for better understanding$.$

⧪ Deviation at point A :

• δ₁ = 180 - 2(45)
• δ₁ = 90°

⧪ Deviation at point B :

• δ₂ = 180 - 2(60)
• δ₂ = 60°

⧪ Net deviation :

➙ δ = δ₁ + δ₂

➙ δ = 90° + 60°

➙ δ = 150°

Cheers!