Which expression gives the de Broglie wavelength of a non-relativistic particle of…

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Problem

Which expression gives the de Broglie wavelength

\lambda

of a non-relativistic particle of mass

m

moving with speed

v

? (a)

\displaystyle \lambda=\dfrac{2h}{m v}

(b)

\displaystyle \lambda=\dfrac{h}{2\pi m v}

(c)

\displaystyle \lambda=\dfrac{h}{m v}

(d)

\displaystyle \lambda=\dfrac{h}{\gamma m v}