NCERT · Class 12 · Physics · Magnetism and MatterIf a bar magnet is cut into two equal pieces transverse to its length, the magnetic dipole moment of each new piece will become:
Step-by-Step Solution
The magnetic dipole moment is given by $M = m \cdot l$, where $m$ is pole strength and $l$ is length. When cut transverse to the length, the pole strength $m$ remains the same, but the length becomes $l/2$. Thus, the new magnetic moment is $M' = m \cdot (l/2) = M/2$.
Detailed Options Breakdown
Option : Double
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Magnetism and Matter.
Option 1: Half (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Four times
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Magnetism and Matter.
Option 3: Unchanged
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Magnetism and Matter.
💡 Study Guide: This question tests core syllabus concepts from Magnetism and Matter. For formulas, key summaries, and mock exam reference guides, read the full Magnetism and Matter Revision Notes.