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प्रश्न
The boy walks towards the mirror at a speed of 1 m/s. At what speed does his image approach him?
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उत्तर
The image approaches him at a speed of 2 m/s . The reason being, the image moves at a speed of 1 m/s and
the relative speed of the image will be equal to the sum of the speeds of the image and the boy.
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