Question
Question: A small girl of height 1 m can just see her image in a vertical plane mirror 4m away from her. Her e...
A small girl of height 1 m can just see her image in a vertical plane mirror 4m away from her. Her eyes are 0.92 m from the floor. In order that she sees her full image in the mirror, the shortest vertical dimension of the mirror is –
A
0.50 m
B
0.70 m
C
0.46 m
D
0.56 m
Answer
0.50 m
Explanation
Solution
The minimum size of plane mirror required to see the full image of anyone is half of the height required.