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Asked: 2020-11-24T10:59:04+00:00 In:

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

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Poll Results

19.35%(i) 3 m ( 6 voters )
9.68%(ii) 5 m ( 3 voters )
70.97%(iii) 6 m ( 22 voters )
0%(iv) 8 m
Based On 31 Votes

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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

2020-2021cbsechapter 15class 7 scienceclass7lightncertscience
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    1 Answer

    1. (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.

      https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-15/

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