Question

12. David is observing his image in a plane mirror. The distance between
the mirror and his image is 4 m. If he moves 1 m towards the mirror.
then the distance between David and his image will be
W 3 m
5 m
w) 6 m
(iv)
8 m

How?​

Answer 1

the distance between David and the mirror will be 3m

Answer 2

Explanation:

The distance between David and the mirror is equal to the distance between the mirror and his image. When he moves 1 m towards the mirror, he is at a distance of 3m (4m - 1m) from the mirror. Thus, the distance between David and his image will be = 3m + 3m = 6m.