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Q.

A point object in front of a fixed plane mirror moves with a velocity 3i^+4j^+5k^. Here k^ is along the normal to the plane mirror and facing towards the object. The velocity of the image is

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a

3i^+4j^+6k^

b

−3i^−4j^+5k^

c

3i^+4j^−5k^

d

−3i^−4j^−4k^

answer is B.

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Detailed Solution

Only the component of light ray, normal to plane of the mirror is reversed.

vi=3i^+4j^−5k^

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