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JEE Main Physics Class 11 Work, Energy and Power Part 1 Questions

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Question : 20

Total: 100

A particle of mass m is moving along the x -axis with initial velocity u

. It collides elastically with a particle of mass 10m at rest and then moves with half its initial kinetic energy (see figure). If sin‌θ1=√n‌sin‌θ2, then value of n is ______.

[NA 2 Sep. 2020 (II)]

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