A person standing in front of a plane mirror approaches the mirror

A person standing in front of a plane mirror approaches the mirror by 40 cm. The new distance between the person and his image in the plane mirror is

  1. 60 cm
  2. 1.4 m
  3. 1.2 m
  4. 2.0 m

Answer

According to the question,

New distance between the person and the mirror = 100-40 = 60 cm

New distance between the person and the image in the plane mirror = 2* New distance between the person and the mirror = 2*60 = 120 cm = 1.2 m

The correct option is C.