CBSE 2023 · Region 4 · Set 1 · Q12 · 1 mark
A proton and an alpha particle have the same kinetic energy. The ratio of de Broglie wavelengths associated with the proton to that with the alpha particle is :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle 2$
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CBSE Class 12 Physics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.