Question

Two plane mirrors are inclined at 70${}^{\circ }$. A ray. incident on one mirror at an angle $\theta$ after reflection falls on the second mirror and is reflected from there parallel to the first mirror, then $\theta$ is

• A. 50${}^{\circ }$
• B. 45${}^{\circ }$
• C. 30${}^{\circ }$
• D. 55${}^{\circ }$

Answer 1

Answer: (A)

Correct answer is (a) 50${}^{\circ }$