A lady is standing in front of a plane mirror at a distance of 1 m from it She walks 60 cm towards t...........

General Science (NDA) Physics

A lady is standing in front of a plane mirror at a distance of 1 m from it. She walks 60 cm towards the mirror. The distance of her image now from herself (ignoring the thickness of the mirror) is

40 cm

60 cm

80 cm

120 cm

Explanation:

Initial distance of the lady from the mirror is x₁ = 1 m = 100 cm
After moving 60 cm towards the mirror, new distance is x₂ = 100 − 60 = 40 cm
Distance of her image from herself is d = x₂ + x₂ =2x₂= 80 cm