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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

200p

B

400p

C

`(p)/(200)`

D

100p

Text Solution

Verified by Experts

The correct Answer is:
A
(a) : de Broglie wavelength associated with an electron is
`lamda=(h)/(p)orp=(h)/(lamda):.(Deltap)/(p)=-(Deltalamda)/(lamda)`
`rArr(p)/("Pinitial")=(0.5)/(100)rArr"Pinitial"=200p`
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