A particle is travelling 4 times as fast as an electron. Assuming the ratio of de-Broglie wavelength of a particle to that of electron is 2 : 1 , the mass of the particle is :-

Question

A particle is travelling 4 times as fast as an electron. Assuming the ratio of de-Broglie wavelength of a particle to that of electron is 2 : 1 , the mass of the particle is :-, 1 16 times the mass of e -, 8 times the mass of e -, 16 times the mass of e -, 1 8 times the mass of e -

MARKS App · Accepted Answer

λ = h p λ p λ e = p e p p = m e v e m p V p 2 = m e m p v e 4 v e ∴ m p = m e 8

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