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47.A plane mirror coincides with a plane having equation x=3. A particle is moving along a line with directions ratios 3,4,5. If speed of the particle is root 2 ,the velocity of its image is |
| Answer» 47.A plane mirror coincides with a plane having equation x=3. A particle is moving along a line with directions ratios 3,4,5. If speed of the particle is root 2 ,the velocity of its image is | |