An electron is accelerated through a potential difference of 100V. What is the de Broglie wavelength associated with it ? To which part of the electromagnetic spectrum does this value of wavelength correspond ?

Explanation

de Broglie wavelength, `lambda =( ( h )/(p)) =( h )/( sqrt(2mqV))`
`= (6.63 xx 10^(-34) )/( sqrt(2 xx 9.1 xx 10^(-31) xx 1.6 xx 10^(-19) xx 100))`
`= 1.227 xx 10^(-10) m = 1.227 Å`
This wavelength belongs to X -ray spectrum.