Q148 / 180 · COMEDK 2026 (9 May Shift 1) · Physics
Paramagnetic substances
- AMove from a region of strong magnetic field to weak magnetic field
- BHas susceptibility less than zero
- CAttract strongly towards external magnetic field
- Correct answerDAlign themselves along the directions of external magnetic field
Solution
Paramagnetic substances have a small positive magnetic susceptibility ($\chi > 0$) and are weakly attracted by an external magnetic field.
They tend to move from a region of weak magnetic field to a region of strong magnetic field.
When placed in an external magnetic field, the atomic dipoles of paramagnetic substances align themselves in the direction of the external magnetic field.
Answer: Align themselves along the directions of external magnetic field
They tend to move from a region of weak magnetic field to a region of strong magnetic field.
When placed in an external magnetic field, the atomic dipoles of paramagnetic substances align themselves in the direction of the external magnetic field.
Answer: Align themselves along the directions of external magnetic field
Hence, the correct answer is option: 'D'.