An electron and a proton both moving at nonrelativistic speeds have the same de Broglie wavelength. Which of the following are also the same for the two particles? (A) speed
(B) kinetic energy
(C) frequency
(D) momentum

Explanation:

The De-Broglie wavelength is given by :

h is Planck's constant

p is momentum

In this case, an electron and a proton both moving at nonrelativistic speeds have the same de Broglie wavelength. Mass of electron and proton is different. It means their velocity and energy are different.

Only momentum is the factor that remains same for both particles i.e. momentum.

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

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