Question

An object is placed 1.5 m from a plane mirror. How far is the image from the object?

• A. 3m
• B. 1.5m
• C. 2m
• D. 0m

Answer 1

The correct option is A 3 m

In the plane mirror, the image distance is always equal to the object distance from the mirror. According to the question, the object distance is 1.5 m so the image distance will be 1.5 m and the distance between the object and image will be 3 m.

The characteristics of an image formed by a plane mirror are:

• Image formed is virtual
• The distance of the image ‘behind’ the mirror is equal to the distance of the object in front of the mirror
• The size of the image formed is equal to the size of the object
• The image is laterally inverted