Question

Two plane mirrors are inclined at an angle of . The number of images of a point object placed between them will be

• A. 2
• B. 3
• C. 4
• D. 5

Answer 1

Answer: (C)

4

Answer 2

$n = \left( \frac { 360 } { \theta } - 1 \right) \Rightarrow n = \left( \frac { 360 } { 72 } - 1 \right) = 4$