Question

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 rrillror, then the distance between David and his image will be 

(i) 3 m 

(ii) 5 m 

(iii) 6 m 

(iv) 8 m

Answer 1

Correct answer is (iii) 6 m

Explanation: As David moves 1 m towards the mirror, the image also moves 1 m towards the mirror. Now the distance between David and mirror is 3m and the distance between mirror and image is 3m. So, the total distance between David and his image will be 6m