A bar magnet is cut into two equal halves along a plane parallel to the magnetic axis. The one parameter which remains unchanged is
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → intensity of magnetisation
When a bar magnet is cut along a plane parallel to its magnetic axis:
- Each half becomes a smaller bar magnet.
- Magnetic moment is halved, pole strength is halved, magnetic field lines change.
- Intensity of magnetisation (magnetic moment per unit volume) remains the same.
Final Answer: intensity of magnetisation