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JEE Main 2012 Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main 2012

A moving particle of mass m, makes a head on elastic collision with another particle of mass 2m, which is initially at rest. The percentage loss in energy of the colliding particle on collision, is close to

Answer: (3)

Solution

Elastic collision: . The colliding particle

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Question ID VK-103540