Question

When the angle between two plane mirrors is ${60}^o$, how many multiple images will be formed by the mirrors?

• A. $5$
• B. $6$
• C. $7$
• D. $8$

Answer 1

The correct option is A $5$

Number of images formed by two plane mirrors at an angle of $\theta$is given by

$no.ofimages=\frac{360}{\theta }-1$

According to question

$\theta ={60}^0$

Hence $noofimages=\frac{360}{60}-1$

$no.ofimages=5$