Question

Find the number of images formed by plane mirrors kept at an angle of ${60}^{\circ }$.

• A. Inner - concave; Outer - convex
• B. Inner - concave; Outer - concave
• C. Inner - convex; Outer - concave
• D. Inner - convex; Outer - convex

Answer 1

The correct option is B

Inner - concave; Outer - concave

Number of images $=\frac{{360}^{\circ }}{\theta }-1$ where $\theta$ is the angle between the mirrors.

$=\frac{360}{60}-1=5$

$\Rightarrow$ Number of images formed is $5$