In the adjacent figure, AO and OB are incident and reflected rays resp

1.	In the adjacent figure, AO and OB are incident and reflected rays respectively angle ∠AOB = 90°. Find the values of angle of incidence and angle of reflection.
Answer» We know that angle of incidence is equal to angle of reflection. i = r …….. (1) From the figure, ∠AOB indicates i + r = 90° From (1) ⇒ i + i = 90° 2i = 90° ⇒ i = 90/2 = 45° ⇒ i = r = 45° Angle of incidence i = 45°; Angle of reflection r = 45°.

In the adjacent figure, AO and OB are incident and reflected rays respectively angle ∠AOB = 90°. Find the values of angle of incidence and angle of reflection.

Answer»

We know that angle of incidence is equal to angle of reflection.

i = r …….. (1)

From the figure, ∠AOB indicates i + r = 90°

From (1)

⇒ i + i = 90°

2i = 90°

⇒ i = 90/2 = 45°

⇒ i = r = 45°

Angle of incidence i = 45°; Angle of reflection r = 45°.