JEE Main 2026 — Atomic Physics Question with Solution
JEE Main 2026 (21 January Shift 2)
Question
The energy of an electron in an orbit of the Bohr's atom is where is the ground state energy. If is the angular momentum of the electron in this orbit and is the Planck's constant, then is :
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Show full solutionCorrect option: A
Correct answer
A5
Step-by-step explanation
In Bohr's atom, the energy levels are where is the ground state energy.
Given , we have , which gives , so .
The angular momentum in Bohr's model is .
Therefore, .
Given , we have , which gives , so .
The angular momentum in Bohr's model is .
Therefore, .
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