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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Practice Set 1 > A particle of mass m is moving along the x-axis with initial velocity u^i . It collides elastically with a particle of mass 10 m at rest and then moves with half its initial kinetic energy (see figure). If sin θ1 =√ n sin θ2 then value of n is.

A particle of mass m is moving along the x-axis with initial velocity u^i . It collides elastically with a particle of mass 10 m at rest and then moves with half its initial kinetic energy (see figure). If sin θ1 =√ n sin θ2 then value of n is.

area A and force F are chosen as fundamental units If speed (V) then the dimension of Young’s modulus will be