Question

Two plane mirrors are inclined at an angle by ${120}^o$, as the figure shows. If a ray strikes mirror $M_1$$,ata$65^o$angleofincidence,atwhatangle$\theta$doesitleavemirror$M_2$.

• A. 35${}^o$
• B. 45${}^o$
• C. 55${}^o$
• D. 65${}^o$

Answer 1

The correct option is C 55${}^o$