Question

A man standing in frount of a plane mirror finds his image to be at a distance of 6 metre from himself.the distance of man from the mirror is
6m
3m
2m
12m​

Answer 1

The correct answer is: 3m

hope it helps..

Answer 2

Refer to the attachment!

Say, M is the plane mirror, O is the object and I is the image. Now, the distance of the man from his image is '6 m' and also we know that the distance of the image from the mirror is same as the distance of the man from the mirror, say distance between the man and the mirror is 'n'. Thus, distance between the image and the mirror will also be 'n'. Also, from the attachment it is clear that:

n + n = 6

2n = 6

n = 3 metre.

Hence, the correct answer is (A) 3m.