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Finding Average Velocity

A man run tow...

Question

A man run towards the plane mirror at $2 m s^{- 1}$ . The relative speed of his image with respect to him will be?

A

2 m s^{- 1}

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B

4 m s^{- 1}

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C

18 m s^{- 1}

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D

10 m s^{- 1}

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Solution

The correct option is C $4 m s^{- 1}$
The speed of image is same as that of a plane mirror but in the opposite direction
$∴$ relative speed of image = 2 - (-2)
= 4 m/s

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