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Question

# An observer moves towards a stationary plane mirror at a speed of 4m/s. The speed of image with respect to mirror is __________.

A

8 m/s away from the mirror

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B

4 m/s away from the mirror

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C

8 m/s towards the mirror

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D

4m/s towards the mirror

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Solution

## The correct option is D 4m/s towards the mirror As the observer comes closer to the plane mirror, the image also comes closer. Also, in case of plane mirror, object distance = image distance. Hence, the speed of the image w.r.t. mirror is also 4 m/s, towards the mirror.

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