An electron and a proton are traveling at the same speed. Which has the longer wavelength?
A)the electron
B)the proton
C)both the same
D)none of the above

Question

Quizplus · Accepted Answer

The wavelength of a particle is related to its mass and velocity by de Broglie's equation: λ = h/mv, where h is Planck's constant. Since both particles have the same velocity, the one with the smaller mass (the electron) will have the longer wavelength.

An Electron and a Proton Are Traveling at the Same