NEET 2015 Physics question
Two particles of masses , move with initial velocities and . On collision, one of the particles get excited to higher level, after absorbing energy . If final velocities of particles be and then we must have :
Answer: (2)
Solution
Total energy is always conserved. Part of the initial kinetic energy goes into exciting one particle (internal excitation energy ), so the final kinetic energy is less than the initial by : , i.e. $ + - ε =
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