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Image Formation by a Plane Mirror

A man runs to...

Question

A man runs towards mirror with a speed of 10m/s then the speed of his image with respect to himself will be

A

20 m / s

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B

10 m / s

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C

Zero

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D

100 m / s

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Solution

The correct option is A $20 m / s$

$v_{I P} = v_{I} - v_{p} = (v - (- v)) = 2 v Speed of image wrt person is v_{I P} v_{I P} = 2 v = 2 \times 10 = 20 m / s$

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