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

Q. Two plane mirrors are inclined at ${70}^o$. A ray incident on one mirror at angle $\theta$, after reflection falls on second mirror and is reflected from there parallel to first mirror. The value of $\theta$ :

Q.

Two plane mirrors are inclined at 70 degree. A ray incident on one mirror at incident angle theta,after reflection falls on the 2nd mirror and is reflected from there parallel to the first mirror. The value of theta is

Q. There are two plane mirrors placed at some angle $\theta$ with each other. A ray incident on first mirror (travelling parallel to second mirror) , travels parallel to the first mirror after two successive reflections. Find the angle $\theta$ between the mirrors.

Q. Two plane mirrors $M_1$ and $M_2$ are inclined to each other at ${70}^{\circ }.$ A ray incident on the mirror $M_1$ at an angle $\theta$ falls on $M_2$ and is then reflected parallel to M, for

Q. Two plane mirror A and B are inclined at angle $\theta (<{90}^o)$ to each other. A light ray parallel to mirror B is incident on mirror A and it becomes parallel to mirror A after reflection from mirror B. Find the value of angle $\theta$.