Question

If two mirrors are kept at $60^{\circ }$ to each other, then the number of images formed by them is:

• A. 5
• B. 6
• C. 7
• D. 8

Answer 1

Answer: (A)

Number of images $n=\frac{360^{\circ }}{\theta }-1$
where 0 is angle between mirrors. Thus,$\theta =60^{\circ }$
(given) So, number of images
$n=\frac{360^{\circ }}{60^{\circ }}-1=5$