Question:
If the work done in turning a magnet of magnetic moment \( M \) by an angle of \( 90^\circ \) from the magnetic meridian is in times the corresponding work done to turn it through an angle of \( 60^\circ \), then the value of \( n \) is
If the work done in turning a magnet of magnetic moment \( M \) by an angle of \( 90^\circ \) from the magnetic meridian is in times the corresponding work done to turn it through an angle of \( 60^\circ \), then the value of \( n \) is
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The work done to rotate a magnet in a magnetic field is proportional to the angle of rotation and the magnetic moment.
Updated On: Jan 6, 2026
- \( 1 \)
- \( 1/2 \)
- \( 2 \)
- \( 1/4 \)
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Work done in rotating a magnet.
The work done in rotating a magnet is given by \( W = M \cdot B \cdot \theta \). The ratio of work done in rotating by \( 90^\circ \) and \( 60^\circ \) gives the value of \( n \).
Step 2: Conclusion.
The value of \( n \) is \( 1/2 \), corresponding to option (2).
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