Question 1 — A light ray is - Questions at the end of the chapter - Chapter 10 Class 8 - Light: Mirrors and Lenses (Curiosity)

Last updated at July 13, 2026 by

Q 1
Question

A light ray is incident on a mirror and gets reflected by it. The angle made by the incident ray with the normal to the mirror is 40°. What is the angle made by the reflected ray with the mirror?

  • (i) 40° (ii) 50° (iii) 45° (iv) 60°
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Answer
Option (ii) 50° is correct.

Explanation

  • The angle of reflection equals the angle of incidence, so it is 40° to the normal.
  • The normal is at 90° to the mirror.
  • So the angle with the mirror is 90° − 40° = 50°.
The reflected ray is 40° from the normal, which is 50° from the mirror.
← Back to concept: 10.3 What Are the Laws of Reflection?
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