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Calculate the de Broglie wavelength of ...

Calculate the de Broglie wavelength of an electron travelling at `1%` of the speed of the light

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The correct Answer is:
A, B, D
`4.42 nm`
Hint : Speed (v) =` (3 xx 10^(8) m s^(-1))/(1000)`
`m_(e) = 9.1 xx 10^(-27) g`
`lambda = (h)/(mv)`
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