Two particles of masses m1 , m2 move with initial velocities u1 and u2 . On collision, one of the particles get excited to higher level, after absorbing energy \(\epsilon\). If final velocities of particles be v1 and v2 then we must have :
Answer & explanation
Correct answer: option 2
KEi - excitation energy = KEf
⇒ \(\frac{1}{2}m_1u_1^2 + \frac{1}{2}m_2u_2^2 - \epsilon = \frac{1}{2}m_1v_1^2 + \frac{1}{2}m_2v_2^2\)