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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

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

B

`6.25xx10^(6) m//s`

C

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

D

`4.24xx10^(6) m//s`

Text Solution

Verified by Experts

The correct Answer is:
A
`lambda=h/(mv)`
`:. v=h/(m lambda)=(6.63xx10^(-34))/(9.1xx10^(-31)xx10^(-10))`
`=7.25xx10^(6)` m/s.
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