Question

If two plane mirrors are inclined at an angle of ${90}^{\circ }$ to each other, how many images of an object can be seen?

• A. Any of number of images depending on the position of the observer and the object
• B. Only $1$
• C. Only $3$
• D. Only $2$

Answer 1

The correct option is C Only $3$

Number of images $=\left({360}^{\circ }/\theta \right)-1$

$=\left(360/90\right)-1$

$=4-1$

$=3$