A. 70°
B. 45°
C. 25°
D. 20°
Correct Answer:
Option D = 20°
Explanation
Whenever a ray of light is incident on a plane mirror at an angle of incidence l, if the mirror is then rotated through an angle θ, then the reflected ray is rotated through an angle twice θ
So if θ = 35°, then the reflected ray is rotated through 2 x 10° = 20°
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