Magnetism and Matter MCQs (NCERT Based)
Magnetism and Matter – MCQs (NCERT Based)
Class: 12 | Subject: Physics |
Section: Magnetic Effects of Current & Magnetism |
Topic: Magnetism and Matter
Based on: NCERT Syllabus | CBSE Board Examination Standard
Based on: NCERT Syllabus | CBSE Board Examination Standard
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 12 Board Examination preparation.
1. SI unit of magnetic dipole moment:
Answer: B
Magnetic dipole moment = Current × Area.
Magnetic dipole moment = Current × Area.
2. Bar magnet behaves like:
Answer: B
It has north and south poles like a dipole.
It has north and south poles like a dipole.
3. Magnetic field lines form:
Answer: B
Magnetic monopoles do not exist.
Magnetic monopoles do not exist.
4. Inside a bar magnet field lines are:
Answer: B
They return internally from south to north.
They return internally from south to north.
5. Magnetic susceptibility symbol:
Answer: B
Denoted by chi (χ).
Denoted by chi (χ).
6. Diamagnetic substances have χ:
Answer: B
Weakly repelled.
Weakly repelled.
7. Paramagnetic substances are:
Answer: A
Small positive χ.
Small positive χ.
8. Ferromagnetic example:
Answer: B
Strong attraction.
Strong attraction.
9. Retentivity means:
Answer: A
Ability to retain magnetization.
Ability to retain magnetization.
10. Coercivity is field to:
Answer: B
Reduce magnetization to zero.
Reduce magnetization to zero.
11. Soft iron has:
Answer: B
Easily magnetized & demagnetized.
Easily magnetized & demagnetized.
12. Permanent magnets require:
Answer: B
Resist demagnetization.
Resist demagnetization.
13. Earth behaves like:
Answer: B
Has magnetic poles.
Has magnetic poles.
14. Magnetic declination is angle between:
Answer: A
Navigation concept.
Navigation concept.
15. Magnetic inclination at equator:
Answer: A
Field horizontal.
Field horizontal.
16. Inclination at poles:
Answer: D
Field vertical.
Field vertical.
17. Neutral point occurs where:
Answer: A
Resultant field zero.
Resultant field zero.
18. Magnetic permeability unit:
Answer: A
μ unit henry per metre.
μ unit henry per metre.
19. Diamagnetic example:
Answer: B
Weakly repelled.
Weakly repelled.
20. Hysteresis loop shows:
Answer: A
Relation between B & H.
Relation between B & H.
