Solveeit Logo
Login

Question

Question: A man is 10 cm below the top of his head. In order to see his entire height right from toe to head, ...

A man is 10 cm below the top of his head. In order to see his entire height right from toe to head, he uses a plane mirror kept at a distance of 1m1 m from him. The minimum length of the plane mirror required is

A

B

90 cm

C

85 cm

D

170 cm

Answer

90 cm

Explanation

Solution

According to the following ray diagram length of mirror

=12(10+170)=90 cm= \frac { 1 } { 2 } ( 10 + 170 ) = 90 \mathrm {~cm}