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An electron of kinetic energy K collides...

An electron of kinetic energy K collides elastically with a stationary hydrogen atom in the ground state. Then,

A

must be elastic

B

may be partially eleastic

C

must be completely inelastic

D

may be completely inelastic

Text Solution

Verified by Experts

The correct Answer is:
A
`10 eV` electron cannot excite a hydrogen atom Hence collision is elastic.
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RESONANCE ENGLISH-ATOMIC PHYSICS-Exercise ( Part II : Only one one correct type)
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