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Question

An electron and a proton are accelerated through the same potential difference. The ratio of their de Broglie wavelengths (λeλp ) is
  1. 1
  2. memp
  3. mpme
  4. mpme

A
1
B
mpme
C
mpme
D
memp
Solution
Verified by Toppr

λe=h2meeV

λp=h2mpeV

λeλp=mpme

So, the answer is option (D).

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