Physics WAEC

A ray of light is incident on a plane mirror at an angle of 20°. This mirror is rotated through, twice this angle, In this new position the angle between the incident ray and the reflected ray is

A. 20°
B. 40°
C. 80°
D. 120°

Correct Answer:

Option B – 40°

SEE ALSO Which of the following instruments helps to maintain the correct humidity and temperature of a building?
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