Question

1) Derive an expression along with diagram to determine the minimum size of plane

mirror of obtain full image of a person of height HF in front of it.​

Answer 1

Answer:

In order to see full image of a person, the minimum size of the mirror should be one half the person's height. This is so because, in reflection, the angle of incidence is equal to angle of reflection. So, to see the image of a 6 ft tall person, a 3 ft long mirror is required.