# Q.12. David is observing his image in a plane mirror. Die 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 (i) 3 m (ii) 5 m (iii) 6 m (iv) 8 m

(iii) 6 m

Solution :

Initially, David is standing in front of the mirror. The distance between the mirror and his image= 4m.

David moves 1m towards the mirror. The distance of David from the mirror will be 3m.

The distance of the image from the mirror = 3m.

Therefore the distance between David and his image= 3m + 3m =6m.