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Light Reflection and Refraction
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09/08/2021 11:51 am
Topic starter
A man stands 10 m in front of a large plane mirror. How far must he walk before he is 5 m away from his image?
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09/08/2021 11:52 am
Initially, the distance between the man and the mirror is 10m.
So, the distance between man and his image is 10 + 10 = 20m
Distance between the man and his image is 5 m when the man is 2.5 m away from the mirror.
Therefore, he has to walk 10 m - 2.5m = 7.5 m towards the mirror