Problem

A plane mirror is moving with velocity

4\hat{i} + 5\hat{j} + 8\hat{k}

. A point object in front of the mirror moves with a velocity

3\hat{i} + 4\hat{j} + 5\hat{k}

. Here

\hat{k}

is along the normal to the plane mirror and facing towards the object. The velocity of the image is: (a)

-3\hat{i} - 4\hat{j} + 5\hat{k}

(b)

3\hat{i} + 4\hat{j} + 11\hat{k}

(c)

-3\hat{i} - 4\hat{j} + 11\hat{k}

(d)

7\hat{i} + 9\hat{j} + 11\hat{k}