Atomic Structure Question 422

Question: If a proton and α -particle are accelerated through the same potential difference, the ratio of de-Broglie wavelengths λp and λα is

Options:

A) 3

B) 22

C) 1

D) 2

Show Answer

Answer:

Correct Answer: B

Solution:

  • λp=h2eVmp;

λHe2+=h2×2eVmHe2+=h2×2eV×4mp
λpλHe2+=22



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