JEE Main 2024 — Atomic Physics Question with Solution
JEE Main 2024 (04 Apr Shift 2)
Question
According to Bohr's theory, the moment of momentum of an electron revolving in orbit of hydrogen atom is:
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Moment of momentum is
$\begin{aligned}
& \overrightarrow{\mathrm{L}}=\overrightarrow{\mathrm{r}} \times \mathrm{m} \overrightarrow{\mathrm{v}} \\
& \mathrm{L}=\mathrm{mvr}=\frac{\mathrm{nh}}{2 \pi}=\frac{4 \mathrm{~h}}{2 \pi}=\frac{2 \mathrm{~h}}{\pi}
\end{aligned}$
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This is a previous-year question from JEE Main 2024, covering the Atomic Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.