Question

When a ray of light strikes a plane mirror at an angle of ${15}^{\circ }$ with the mirror, what will be the angle through which the ray gets deviated?

• A. ${15}^{\circ }$
• B. ${30}^{\circ }$
• C. ${75}^{\circ }$
• D. ${150}^{\circ }$

Answer 1

The correct option is D ${150}^{\circ }$

Given:
Hence from the figure
angle of deviation $={15}^0+{15}^0$
$={30}^0$