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Two particles of masses m 1, m2 move wit...

Two particles of masses `m_ 1, m_2` move with initial velocities `u_1 and u_2` . On collision , one of the particles get excited to higher level , after , absorbing energy `varepsilon` . If final veloctites of particles be `v_1 and v_2` , then we must have

A

`m_1^2u_1+m_2^2u_2-varepsilon=m_1^2v_1+m_2^2v_2`

B

`1/2m_1u_1^2+1/2m_2u_2^2=1/2m_1v_1^2+1/2m_2v_2^2-varepsilon`

C

`1/2m_1u_1^2+1/2m_2u_2^2-varepsilon=1/2m_1v_1^2+1/2m_2v_2^2`

D

`1/2m_1^2u_1^2+1/2m_2^2u_2^2+varepsilon=1/2m_1^2v_1^2+1/2m_2^2v_2^2`

Text Solution

Verified by Experts

The correct Answer is:
A
A part of the initial kinetic energy . `varepsilon` excites a particle to higher level. The remaining portion of the initial kinetic energy goes no to become the final kinetic energy.
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