NEET2025Physics-Magnetism
NEET 2025 Physics Magnetic Moment MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A model for quantized motion of an electron in a uniform magnetic field B states that the flux passing through the orbit of the electron is n(h/e) where n is an integer, h is Planck’s constant and e is the magnitude of electron’s charge. According to the model, the magnetic moment of an electron in its lowest energy state will be (m is the mass of the electron)
A
he/πm
B
he/2πm
C
heB/πm
D
heB/2πm
Correct Answer
Option B
Detailed Explanation
The magnetic moment μ is given by μ = n(h/e)/(2πm) for the lowest energy state (n=1). Therefore, the correct expression is he/2πm.
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