NEET2024Physics-Magnetic Moment
NEET 2024 Physics Effect of Shape Change MCQ Question
Type: MCQ-numerical-Medium-Class 12
An iron bar of length L has magnetic moment M. It is bent at the middle of its length such that the two arms make an angle 60° with each other. The magnetic moment of this new magnet is:
A
2 M
B
M/√3
C
M
D
M/2
Correct Answer
Option D
Detailed Explanation
When the bar is bent, the effective length decreases, and the angle affects the resultant magnetic moment. Using vector addition, the new magnetic moment is M/√3.
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