David Sang and Graham Jones Solutions for Chapter: Quantum Physics, Exercise 9: Question

A beam of electrons is accelerated from rest through a p.d. of $1.0\mathrm{kV}$. What is the energy (in eV) of each electron in the beam?

A beam of electrons is accelerated from rest through a p.d. of $1.0\mathrm{kV}$.

Calculate the speed, and hence the momentum $\left(\mathrm{mv}\right)$, of each electron.

A beam of electrons is accelerated from rest through a p.d. of $1.0\mathrm{kV}$.

(c) Calculate the de Broglie wavelength of each electron.

A beam of electrons is accelerated from rest through a p.d. of $1.0\mathrm{kV}$. Would you expect the beam to be significantly diffracted by a metal film in which the atoms are separated by a Spacing of $0.25\times {10}^{-9}\mathrm{m}$.