What should be the minimum height of a plane mirror to get full image of an object of 2 m height?

Correct option is A

Correct Answer: A — 1 m
Explanation 

For a plane mirror, the minimum height of the mirror required to see the full image of an object is half the height of the object.

This result is independent of the distance between the object and the mirror.

Given:

Height of object = 2 m

Minimum height of mirror = Object height / 2

Minimum mirror height = 2 / 2 = 1 m