Question

12. When the two plane mirrors are placed at an angle of 30° to each other,
the number of images formed will be *
o 7
O 3
O 11
O 12​

Answer 1

Number of images formed, n = (360 ÷ Angle) - 1

n = 360 ÷ 30 - 1

n = 12-1

n=11

Hence, the number of images formed will be 11 that is third option.

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