Two mirrors meet at right angles. A ray of light is incident on one at an angle of $30°$ as shown in the figure. Draw the reflected ray from the second mirror.        
      

Yasir stands at A just on the side of a plane mirror as shown in figure. Can he see himself in the mirror? Also, can he see the image of objects situated at $\mathrm{P}, \mathrm{Q}$ and $\mathrm{R}$?

(a) Find out the position of the image of an object situated at $\mathrm{A}$ in the plane mirror (shown in figure below).
(b) Can Saba at $\mathrm{B}$ see this image?
(c) Can Yasir at $\mathrm{C}$ see this image?
(d) When Saba moves from $\mathrm{B}$ to $\mathrm{C}$, where does the image of $\mathrm{A}$ move.