Question

In the figure shown a thin parallel beam of light is incident on a plane mirror $M_1$ at small angle ‘$\theta$’. $M_2$ is a concave mirror of focal length ‘f ’. After three successive reflections of this beam the x and y coordinates of the image is:

• A. $\text{x = f – d, y = f}\theta$
• B. $\text{x = d + f, y = f}\theta$
• C. $\text{x = f – d, y = –f}\theta$
• D. $\text{x = d – f, y = –f}\theta$

Answer 1

The correct option is D

$\text{x = d – f, y = –f}\theta$