An electron of the kinetic energy 10 
collides with a hydrogen atom in 1st excited state. Assuming loss of kinetic energy in the collision to be quantized which of the following statements is correct?
Text Solution
Verified by ExpertsThe correct answer is:
D
In the process of collision, the electron (because of very low mass in comparison to hydrogen atom) can lose upto 10 
is sufficient to ionise the hydrogen atom or excite to higher excited state from first excited state. Hence, the collision can be elastic, inelastic or perfectly inelastic
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