A proton has five times the momentum of an electron.If the electron has a de Broglie wavelength $\lambda$,then the de Broglie wavelength of the proton is
A)$\lambda$
B)5$\lambda$
C)$\lambda$/5
D)25$\lambda$
E)$\lambda$/25

Question

Quizplus · Accepted Answer

The de Broglie wavelength $\lambda$ is given by $\lambda = \frac{h}{p}$, where $h$ is Planck's constant and $p$ is the momentum. If a proton has five times the momentum of an electron, its wavelength will be one-fifth that of the electron, hence $\lambda/5$.

A Proton Has Five Times the Momentum of an Electron λ\lambdaλ

A Proton Has Five Times the Momentum of an Electron $\lambda$