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Find the de-Broglie wavelength of an ele...

Find the de-Broglie wavelength of an electron with kinetic energy of 120 eV.

Text Solution

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`lambda=(h)/(sqrt(2mE))`
`=(6.625 xx 10^(-34))/(sqrt(2 xx 9.1 xx 10^(31) xx 120 xx 1.6 xx 10^(-19)))`
`=1.121 xx 10^(-10)`m.
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