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If the momentum of an electron is change...

If the momentum of an electron is changed by p, then the de Broglie wavelength associated with it changes by `0.5%` The initial momentum of electron will be

A

400 P

B

`(P)/(200)`

C

100 P

D

200 P

Text Solution

Verified by Experts

The correct Answer is:
D
`P=(h)/(lambda)rArr |(DeltaP)/(P)|=(Deltalambda)/(lambda)`
`(DeltaP)/(P_(i))=(Deltalambda)/(lambda)rArr P_(i)=(P)/((0.5)/(100))`
`P_(i)=(1000)/(5)P=200P`
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