111) An electron, a proton, an a-particle and a
hydrogen atom are moving with the same
kinetic energy. The associated de Broglie
wavelength will be longest for
(A) electron
(B) proton
(C) a-particle (D) hydrogen atom
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Answer:
Kinetic energy is given by E = 12mv2 Same kinetic energy implies that electron has highest velocity (as mass is lowest).
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