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Q.

A point object approaches a plane mirror with a speed of  10 ms–𝟏, while the image recedes away from the mirror with a speed of  6 ms–𝟏. The direction and magnitude of the velocity of mirror is :-

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a

away from the object, 2 ms−1

b

towards the object, 8 ms−1

c

away from the object, 8 ms−1

d

towards the image, 6 ms−1

answer is C.

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Detailed Solution

Question Image

V→I=2V→M−V→0

6=2V→M−10

V→M=8m/s (away from the object)

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