Magnetic Effects of Current and Magnetism-Para, Dia and Ferro-Magnetic Substances (NEET Physics): Questions 14 - 18 of 18

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Question number: 14

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

Assertion-Reason▾

Assertion (Ꭺ)

The ferromagnetic substance does not obey Curie’s law.

Reason (Ꭱ)

At Curie point a ferromagnetic substance starts behaving as a paramagnetic substance.

Choices

Choice (4) Response
a. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
b. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
c. Ꭺ is true but Ꭱ is false
d. Ꭺ is false but Ꭱ is true

Question number: 15

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

MCQ▾

Question

When a piece of a ferromagnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is

Choices

Choice (4) Response
a.

3

b.

1

c.

4

d.

2

Question number: 16

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

Assertion-Reason▾

Assertion (Ꭺ)

A paramagnetic sample displays greater magnetization (for the same magnetizing field) when cooled.

Reason (Ꭱ)

The magnetization does not depend on temperature.

Choices

Choice (4) Response
a. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
b. Ꭺ is true but Ꭱ is false
c. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
d. Both Ꭺ and Ꭱ are false

Question number: 17

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

MCQ▾

Question

Liquid oxygen remains suspended between two pole faces of a magnet because it is

Choices

Choice (4) Response
a.

Ferromagnetic

b.

Antiferromagnetic

c.

Diamagnetic

d.

Paramagnetic

Question number: 18

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

MCQ▾

Question

Susceptibility of ferromagnetic substance is

Choices

Choice (4) Response
a.

1

b.

> 1

c.

0

d.

< 1

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