Assertion :Keeping a point object fixed, if a plane mirror is moved away from the object, the image will also move. Reason: In case of a plane mirror, distance of object and its image is equal from any point on the mirror.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Since the distance of object and its image is equal from mirror,

$x_{i m a g e} = - x_{o b j e c t}$

Hence, $\frac{d x_{i m a g e}}{d t} = - \frac{d x_{o b j e c t}}{d t}$

$v_{i m a g e} = - v_{o b j e c t}$

Hence the image moves with equal speed as that of object.

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