CBSE 2025 · Region 5 · Set 1 · Q15 · 1 mark
Assertion (A) : The Balmer series in hydrogen atom spectrum is formed when the electron jumps from higher energy state to the ground state. Reason $\displaystyle (R)$: In Bohr's model of hydrogen atom, the electron can jump between successive orbits only.
Official answer
From CBSE’s own marking scheme for this paper.
(D)
Both Assertion (A) and Reason (R) are false.
AtomsThe Line Spectra of the Hydrogen AtomAnalyseassertion_reasonmedium
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CBSE Class 12 Physics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.