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JEE Advanced 2008 Physics question

PhysicsSystems of Particles and Rotational MotionJEE Advanced 2008

Two balls, having linear momenta and , undergo a collision in free space. There is no external force acting on the balls. Let and be their final momenta. The following option(s) is(are) NOT ALLOWED for any non-zero value of and .

Answer: (A),(D)

Solution

Momentum conservation requires . In (A), the component

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Question ID VK-000791