What is the wavelength of an electron mo...

What is the wavelength of an electron moving with a velocity of `2.0xx10^(7)"ms "^(-1)` ?

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`lamda=(h)/(mv)`
`=(6.626xx10^(-34)"Js")/(9.1xx10^(-31)"kg"xx2.0xx10^(7)"ms"^(-1))`
`= 3.55xx10^(-11)` m

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