First slide

Plane mirror

Question

Two mirrors are placed at right angles to each other. A man is standing between them combing his hair. How many image will he see?

Easy

A

2
B

3
C

1
D

0

Solution

When two plane mirrors are inclined at an angle $θ$ , the number of image obtained is
$n = (\frac{360^{0}}{θ} - 1) = \frac{360^{0}}{90^{0}} - 1 = 3$

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