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)

5

Answer 2

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