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Class 12 Physics (Part I) Chapter 5 Magnetism And Matter Quiz 7 (25 MCQs)

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1. Soft iron retains magnetism once magnetic field is switched off.
2. The value of angle of dip is zero at the magnetic equator because on it
3. The susceptibility of a paramagnetic material is inversely proportional to absolute temperature.
4. Bob made an electromagnet but it was very weak. How can he make it stronger?
5. Give an example of a material that does NOT stick to a magnet.
6. Angle of dip maximum at
7. The magnetic moment of a current carrying circular loop is M. If current passing through the loop is doubled keeping the radius unchanged, the magnetic moment will become:
8. The capacitance of a parallel-plate capacitor can be increased by increasing which of the following?
9. The angle between magnetic axis and geographic axis of earth is
10. Odor:Chemical or Physical Property
11. If relative permeability is 0.1, then nature of material is
12. Magnetic field lines emerge from the north pole and merge at the south pole.
13. Let the magnetic field on earth be modelled by that of a point magnetic dipole at the centre of earth. The angle of dip at a point on the geographical equator is
14. A 9.0-V battery is connected between two parallel metal plates 4.0 mm apart. What is the magnitude of the electric field between the plates?
15. A stationary magnet does not interact with:
16. At a certain place on earth, BH = 1/ROOT 3 BV angle of dip at this place is
17. What will happen to magnetising field intensity if intensity of magnetisation increases
18. Connecting capacitors in parallel effectively causes the ..... .....
19. The relation between geometric length (L) and magnetic length (Lm) is:
20. Where is field strength the strongest in a current carrying wire?
21. A magnetic dipole moment is a vector quantity directed from
22. The magnetic needle is kept in a uniform magnetic field. It experiences
23. The capacitance of a parallel-plate capacitor can be increased by:
24. Name one material that is magnetic.
25. The great circle on the Earth perpendicular to the magnetic axis is called:
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