An electron of mass m e and a proton of mass m P are accelerated through the same potential difference. The ratio of the de-Broglie wavelength associated with the electron to that with the proton is

Question

An electron of mass m e and a proton of mass m P are accelerated through the same potential difference. The ratio of the de-Broglie wavelength associated with the electron to that with the proton is, m P m e, 1, m p m e, m e m p

MARKS App · Accepted Answer

KE = e Δ V λ e = h 2 m e ( e Δ V ) λ p = h 2 m p ( e Δ V ) ⇒ λ e λ p = m p m e

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