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Physics · 2024 · 3 marks
CBSE 2024 · Region 3 · Set 2 · Q26
Explain the origin of the spectral lines of hydrogen atom using Bohr's theory. Draw the energy level diagram of hydrogen atom showing its various…
Explain the origin of the spectral lines of hydrogen atom using Bohr's theory. Draw the energy level diagram of hydrogen atom showing its various spectral series.
Marking-scheme solution
Explanation of origin of spectral lines of hydrogen atom $\displaystyle 1$ Energy level diagram showing various spectral series of hydrogen atom $\displaystyle 2$ When an electron makes a transition from higher energy level to a lower energy orbit, a photon is emitted having energy equal to energy difference between these two orbits. [Do not deduct marks for not showing transition in diagram]
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CBSE Class 12 Physics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.