A plane mirror moves with velocity

PHYSICS · Single correct · CBSE · Physics · Motion in a Plane · Motion in a Plane

Problem

A plane mirror moves with velocity 4i^+5j^+8k^4\hat{i}+5\hat{j}+8\hat{k}. A point object in front of the mirror moves with velocity 3i^+4j^+5k^3\hat{i}+4\hat{j}+5\hat{k}. Here, k^\hat{k} is along the normal to the plane mirror and faces the object. The velocity of the image is: (a) −3i^−4j^+5k^-3\hat{i}-4\hat{j}+5\hat{k} (b) 3i^+4j^+11k^3\hat{i}+4\hat{j}+11\hat{k} (c) −3i^−4j^+11k^-3\hat{i}-4\hat{j}+11\hat{k} (d) 7i^+9j^+11k^7\hat{i}+9\hat{j}+11\hat{k}

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