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Magnetism & Matter | Quiz-01

All the best!

1.

A bar magnet of length L and magnetic dipole moment M is bent in the form of an arc as shown in the figure. The new magnetic dipole moment will be-

M

M/2

3M/π

2M/π

None

2.

A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be halved by rotating it, then the angle by which it is to be rotated is-

30°

45°

60°

90°

None

3.

Which of the following statements is correct?

Diamagnetism is temperature dependent

Paramagnetism is temperature dependent

Paramagnetism is temperature independent

None of these

None

4.

Which of the following statements regarding the magnetic lines of force is NOT correct?

They always form closed loops

They never cross each other

They run from north pole to south pole inside a magnet

Their relative closeness indicates the strength of magnetic field

None

5.

The magnetic field lines near a substance are as shown in the figure. The substance is-

Copper

Iron

Sodium

Aluminium

None

6.

Which one of the following has relative permeability between 0 and 1?

Aluminium

Alnico

Water

Sodium

None

7.

Which one of the following has negative value of susceptibility?

Nickel

Aluminium

Lead

Iron

None

8.

Which of the following has its permeability less than that of free space?

Copper

Aluminium

Copper Chloride

Nickel

None

9.

A ferromagnetic material is heated above its Curie temperature, then which one is a correct statement?

Ferromagnetic domains are not influenced

Ferromagnetic domains become random

Ferromagnetic domains are perfectly arranged

Ferromagnetic material changes itself into diamagnetic material

None

10.

Assertion- Diamagnetic substances exhibit magnetism.
Reason- Diamagnetic materials have permanent magnetic dipole moment.

Both Assertion and Reason are true and Reason is the correct explanation of assertion

Both Assertion and Reason are true but Reason is NOT the correct explanation of assertion

Assertion is true and Reason is false

Both Assertion and Reason are false

None

1 out of 10

Time's up

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Class-12 Physics Notes

1. Electric Charges & Fields

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9. Ray Optics

10. Wave Optics

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Class-12 Physics Quizzes

1. Electric Charges & Fields

2. Electrostatic Potential & Capacitance

3. Current Electricity

4. Moving Charges & Magnetism

5. Magnetism & Matter

6. Electromagnetic Induction

7. Alternating Current

8. Electromagnetic Waves

9. Ray Optics

10. Wave Optics

11. Dual Nature of Radiation & Matter

14. Semiconductors

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