What is the angle of reflection?
A) \[\text{2}0{}^\circ \]
B) \[\text{4}0{}^\circ \]
C) \[\text{7}0{}^\circ \]
D) \[\text{9}0{}^\circ \]
Correct Answer: A
Solution :
The angle of reflection is the angle between the normal and the reflected ray. \[\text{9}0\text{ }-\text{7}0{}^\circ \text{ }=\text{ 2}0{}^\circ .\]
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