What happens to the de Broglie wavelength of an electron if its momentum is reduced to one-half of its initial value?
A)The wavelength decreases by a factor of 4.
B)The wavelength increases by a factor of 4.
C)The wavelength increases by a factor of 3.
D)The wavelength increases by a factor of 2.
E)The wavelength decreases by a factor of 2.

Question

Quizplus · Accepted Answer

The de Broglie wavelength is inversely proportional to the momentum of the electron. Therefore, if the momentum is reduced to one-half of its initial value, the wavelength will increase by a factor of 2 (because the momentum is reduced by a factor of 2).

What Happens to the De Broglie Wavelength of an Electron