Q1)

Use the following information to answer the next question.

Two plane mirrors, M₁ and M₂ are placed at a right angle. A ray of light is incident on M₁ at P₁and gets reflected from M₁. It then gets reflected from M₂ at P₂.

If OP₁ = OP₂, then the angle of reflection of the ray at P₂ will be

kindly explain this question to me in simple and easy language

The angle of reflection is always equal to the angle of incidence. Letibe the angle of incidence at P₁on mirror M₁. The following figure shows the various angles the light ray makes with the mirrors, M₁and M₂.

Since M₁OM₂is 90, the normal XP₁on M₁is parallel to M₂.

Therefore, XP₁P₂= P₁P₂O =i

Since P₁O = OP₂, OP₁P₂= OP₂P₁=i

∴90 i=i

2i= 90

∴i= 45

Since 90 i= 90 45 = 45, all the angles will be 45. Hence, all the reflected and the incident angles will be 45