Question

A person's eye level is 1.5 m. He stands in front of a 0.3 m long plane mirror which is 0.8 m above the ground. The height of the image he sees of himself is:

• A. 1.5 m
• B. 1.0 m
• C. 0.8 m
• D. 0.6 m

Answer 1

The correct option is D 0.6 m

Given: Height of man $=1.5m$

To find: Length of image seen.

Triangle PQT & PRS are similar triangles

so

$\frac{l}{0.3}=\frac{2x}{0.x}$

$l=2\times 0.3$

$l=0.6m$