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
NCERT Solutions for Class 7 Science Chapter 15
Important NCERT Questions
7th Chapter 15 Light
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 12
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(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 3 m and the distance between mirror and image is 3 m. So, the total distance between David and his image will be 6 m.
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