Question

A light ray strickes the surface of plane mirror at an angle 40degree with the surface of mirror .what is the angle of reflection
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Answer 1

Question:

A light ray strikes the surface of plane mirror at an angle 40° with the surface of mirror. What is the angle of reflection?

Answer:

Angle of reflection = $\bold{\angle r = 50°}$

Point to remember:

$\sf{\bullet \:Angle\:of\:incidence=Angle\:of\:reflection}$

Solution:

$\sf{\purple{Angle\:of\:incidence=90° - 40°}}$(angle with mirror)

$\bold{\purple{Angle\:of\:incidence=50°}}$

$\sf{\red{Angle\:of\:incidence=Angle\:of\:reflection}}$

$\bold{\red{Angle\:of\:reflection=50°}}$