A Proton and an Electron Each Have the Same De

Multiple Choice

A proton and an electron each have the same de Broglie wavelength.(i) Which has the greater speed,and (ii) which has the greater kinetic energy?

A) (i) the electron, (ii) Either one can have the greater kinetic energy.
B) (i) the proton, (ii) Either one can have the greater kinetic energy.
C) (i) the electron, (ii) the electron
D) (i) the proton, (ii) the proton