Question on Atomic Structure

A stream of electrons from a heated filament was passed between two charged plates kept at a potential difference V esu. If e and m are charge and mass of an electron, respectively, then the value of \(\frac{h}{l}\) (where \(l\) is wavelength associated with electron wave) is given by

A) \(2meV\)

B) \(\sqrt{meV}\)

C) \(\sqrt{2meV}\)

D) \(meV\)