CBSE 2024 · Region 3 · Set 3 · Q10 · 1 mark
The wavelength of matter wave associated with an electron of kinetic energy K is $\displaystyle \lambda$. If the kinetic energy of the electron is doubled, the associated wavelength becomes :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \sqrt{2} \lambda$
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CBSE Class 12 Physics past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.