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Question

An object is performing uniform circular motion in a horizontal xy - plane in front of a plane mirror kept perpendicular to xy - plane and reflecting surface facing the object. If the object is revolving in an anti-clockwise direction with speed v, then identify the correct statement regarding the motion of the image with respect to ground.

A
The image is moving on a straight line with speed v2
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B
The image is revolving in clockwise direction with speed 2v on circular path
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C
The image is revolving in anti-clockwise direction with speed 2v on circular path
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D
The image is revolving in clockwise direction with speed v on circular path
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Solution

The correct option is D The image is revolving in clockwise direction with speed v on circular path
We know that for fixed plane mirror,
(1) Along perpendicular to the mirror (x - axis), vo=vi
(2) Along parallel to the mirror (y - axis), vo=vi

The velocity of the image at points A,B,C and D depicts that image is revolving with speed v in clockwise direction on a circular path.

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