Physics

Problem

Which one of the following expressions correctly gives the de Broglie wavelength

\lambda

of a particle of mass

m

and charge

q

that is accelerated from rest through a potential difference

V

? a)

\displaystyle \lambda = \dfrac{h}{\sqrt{m q V}}

\displaystyle \lambda = \dfrac{h}{2\sqrt{m q V}}

\displaystyle \lambda = \dfrac{h}{2\pi\sqrt{2 m q V}}

\displaystyle \lambda = \dfrac{h}{\sqrt{2 m q V}}