Question

A plane mirror is placed on an incline with inclination $20°$. An incident ray gets reflected as shown below. What is the angle of reflection?

• A. $60°$
• B. $30°$
• C. $20°$
• D. $70°$

Answer 1

The correct option is A $60°$

We know,
Angle of incidence = Angle of reflection

From the given configuration,
Angle of incidence$=90°-30°=60°$
Therefore, the angle of reflection is also$60°$.