EASY
12th CBSE
IMPORTANT
Earn 100

What are paramagnetic substances? Explain the origin of paramagnetism.

Important Questions on Magnetism

EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 34
What are ferromagnetic substances? Explain briefly domain theory to explain ferromagnetism.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 35
Explain the phenomenon of hysteresis in magnetic materials. Draw a hysteresis loop showing remanence and coercive force.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 36
Define the terms retentivity and coercivity.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 37
In what way is the behaviour of a diamagnetic material different from that of a paramagnetic, when kept in an external magnetic field?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 38
Draw a hysteresis loop with axes labelled and showing remanence and coercive force. What does the area of the loop represent?
MEDIUM
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 39
An electron of mass me revolves around a nucleus of charge +Ze. Show that it behaves like a tiny magnetic dipole. Hence prove that the magnetic moment associated with it is expressed as μ→=-e2 meL→ where L→ is the orbital angular momentum of the electron. Give the significance of negative sign.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 43

Out of the following,

1. Aluminium 2. Bismuth 3. copper 4. Sodium

identify the materials which can be classified as: paramagnetic
Write one property to distinguish between paramagnetic and diamagnetic materials.

EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 43

Out of the following, identify the materials which can be classified as diamagnetic:
1.Aluminium

2. Bismuth

3. Copper

4. Sodium
Write one property to distinguish between paramagnetic and diamagnetic materials.