A stream of electrons from a heated filament was passed P between two charged plates kept at a p...

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A stream of electrons from a heated filament was passed
P between two charged plates kept at a potential difference \( V \)

W esu. If \( e \) and \( m \) are charge and mass of an electron, respectively, then the value of \( h / \lambda \) (where, \( \lambda \) is wavelength associated with electron wave) is given by
(2016 Main)
(a) \( 2 \mathrm{meV} \)
(b) \( \sqrt{m e V} \)
(c) \( \sqrt{2 m e V} \)
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