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The speed of an electron having a wavele...

The speed of an electron having a wavelength of `10^(-10) m` is

A

`7.25 xx10^(6) m//s`

B

`6.26 xx10^6 m//s`

C

`5.25 xx10^6 m//s`

D

`4.24 xx10^6 m//s`

Text Solution

Verified by Experts

The correct Answer is:
A
`lamda=h/(mv)implies10^(-10)=(6.6xx10^(-34))/(9.1 xx10^(-31)xxv)`
`impliesv=(6.6xx10^(-34))/(9.1 xx10^(-31)xx10^(-10))=7.25 xx10^6m//s`
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