In paramagnetic materials permanent magnetic dipoles exist but the interaction b

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Question
In paramagnetic materials
Options
A. permanent magnetic dipoles exist but the interaction between neighbouring dipoles is negligible
B. permanent magnetic dipole do not exist
C. permanent magnetic dipoles exist and the interaction between neighbouring dipoles is very strong
D. permanent magnetic dipole moment may or may not exist

Correct Answer

permanent magnetic dipoles exist but the interaction between neighbouring dipoles is negligible

Explanation

In paramagnetic materials interaction between neighbouring dipoles is negligible.

Materials and Components problems

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1. The hysteresis phenomenon in ferromagnetic materials exists at all temperatures.
Options
A. True
B. False

4. Assertion (A): Silicon is less sensitive to changes in temperature than germanium.
Reason (R): Cut in voltage in silicon is less than that in germanium.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

6. The apparent capacitance at a high angular frequency ? of an air cored capacitor having capacitance C and inductance L is given by
Options
A.
B.
C.
D.

7. Ferroelectric materials are those which
Options
A. cannot be polarized
B. have a permanent polarization
C. have a_e equal to zero
D. have ?_p = 0

8. At room temperature, the current in intrinsic semiconductor is due to
Options
A. holes
B. electrons
C. ions
D. holes and electrons

9. Assertion (A): Atomic number of sodium is 11.
Reason (R): Sodium has a body centred cubic lattice.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

10. Which of the following are donor impurities?
1. Gold
2. Phosphorus
3. Boron
4. Antimony
5. Arsenic
6. Induim
Select the correct answer using the following codes
Options
A. 1, 2, 3
B. 1, 2, 4, 6
C. 3, 4, 5, 6
D. 2, 4, 5

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