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An electron with kinetic energy 5eV is i...

An electron with kinetic energy `5eV` is incident on a hydrogen atom in its ground state.The collision

A

must be kinetic

B

may be partially elastic

C

mustbe completely inelastic

D

may be completely inelastic

Text Solution

Verified by Experts

The correct Answer is:
A
`5eV` electron cannot excite a hydrogen atom and hence there will no loss of `K.E` and hence the collisoin is elastic.
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