What is the de Broglie wave lenght of an electron, which is accelerated from the rest, through a potential difference of 100 V?

What is the de Broglie wave lenght of an electron, which is accelerate

1.	What is the de Broglie wave lenght of an electron, which is accelerated from the rest, through a potential difference of 100 V?
Answer» SOLUTION :POTENTIAL difference = 100 V `=100xx1.6xx10^(-19)J` `lamda=(H)/(sqrt(2mev))` `=(6.626xx10^(-34)KGM^(2)s^(-1))/(sqrt(2xx9.1xx10^(-31)kgxx100xx1.6xx10^(-19)J))` `lamda=1.22xx10^(10)m`