If the speed of an electron increases,its de Broglie wavelength
A)increases.
B)decreases.
C)stays the same.
D)may increase or decrease.

Question

Quizplus · Accepted Answer

The de Broglie wavelength of an electron is given by λ= h/p, where h is Planck's constant and p is the momentum of the electron. As momentum is directly proportional to velocity, an increase in velocity will lead to an increase in momentum. Therefore, as momentum increases, the de Broglie wavelength of an electron decreases.

If the Speed of an Electron Increases,its De Broglie Wavelength