Question
In a Davisson-Germer type of experiment, a crystal with a parallel-plane separation, $d$, of $9.1\times 10^{-2}\textrm{ nm}$ produces constructive interference with an electron beam at an angle of $\theta = 50^\circ$. Which of the following is the maximum de Broglie wavelength for these electrons?
1. $0.07\textrm{ nm}$
2. $0.09\textrm{ nm}$
3. $0.14\textrm{ nm}$
4. $0.21\textrm{ nm}$
(c)
Solution Video