If a reflected ray from a concave mirror makes an angle of 45° with the normal, the angle of incidence will be
- 90°
- 22.5°
- 135°
- 45°
WBBSE
Class X
Physical Science
Light – Reflection and Refraction
01 Mark
2023
d. 45°
Explanation:
According to the law of reflection, the angle of incidence = angle of reflection (measured from the normal). Since the reflected ray makes an angle of 45° with the normal, the angle of incidence will also be 45°.
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