Question

What is the minimum height of a planar mirror placed in a vertical plane 2m distant that will permit a person 2m tall to see themselves from head to toe?

Answer 1

Answer:

Height of mirror will be 1 m for complete image of person

Explanation:

We have given distance of person from plane mirror d = 2 m

And height of person = 2 m

We have to find the height of plane mirror which given full image of person

Height of mirror will be equal to half of height of person

So height of mirror $=\frac{height\ of\ person}{2}=\frac{2}{2}=1m$

So height of mirror will be 1 m for complete image of person