CBSE 2026 · Region 2 · Set 3 · Q9 · 1 mark
In Bohr model of hydrogen atom, an electron is moving in an orbit, with total energy -$\displaystyle 3.4$ eV. Its angular momentum will be
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle 2.1 \times 10^{-34} \mathrm{~J} \mathrm{~s}$
AtomsDE Broglie’s Explanation of Bohr’s Second Postulate of QuantisationApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.