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Calculate the wavelength of an electron ...

Calculate the wavelength of an electron moving with a velocity fo ` 2. 05 xx 10^7 ms^(-1)`.

Text Solution

Verified by Experts

According to de - Broglie wavelength,
`lambda = h/(mv)`
`m = 9.11 xx 10^(-31) kg`,
`h = 6.63 xx 10^(-34) kg m^2 s^(-1)`
`v = 2.05 xx 10^7 ms^(-1)`
`:. lambda = (6.63 xx 10^(34) kg m^2 s^(-1))/((9.11 xx 10^(-31) kg) xx (2.05 xx 10^7 ms^(-1)))`
`= 3.55 xx 10^(-11) m`.
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