Question

A man 180 cm high stands in front of a plane mirror, his eyes are at height of 172 cm from the floor. Then to see his full image for minimum length of the mirror, the lower and of the mirror should be placed at height of?

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Answer 1

Answer:

Height Of mirror = 180/2 = 90cm

Position of mirror = 172/2 = 86cm

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Answer 2

Given:

The height of the man = 180 cm

The height of the man's eyes from the floor = 172 cm

To find:

The height of the mirror to see his full image.

Explanation:

In order to view the man's full image, the minimum mirror length should be half the height of the object.

The minimum length of the mirror ⇒ $\frac{180}{2} \;=\;90\;cm$

Answer:

The height of the mirror to see his full image is 90 cm