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An electron and a proton, each has a wav...

An electron and a proton, each has a wavelenght of 1.00 nm. Find
the kinetic energy of electron.

Text Solution

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Kinetic energy of electron
`E_(k) = ( 1)/( 2) m_(e ) V^(2) = ( p^(2))/( 2m_(e))`
`= ((6.63 xx 10^(-25))^(2))/( 2 xx 9.1 xx 10^(-31))J = 2.42 xx 10^(-19)J`
`= ( 2.42 xx 10^(-19))/( 1.6 xx 10^(-19))eV = 1.51eV`
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