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If the potential difference used to acce...

If the potential difference used to accelerate electrons is tripled, by what factor does the de Broglie wavelength of the electron beam change ?

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`lambda = ( h )/( sqrt( 2mqV)) , lambda' = ( h )/( sqrt( 3 xx 2meV)),`
`( lambda')/(lambda) = ( 1)/( sqrt(3))` or `( lambda)/( sqrt(3))`
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