Magnetic Effects of Current and Magnetism-Para, Dia and Ferro-Magnetic Substances (NEET Physics): Questions 12 - 16 of 18

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Question number: 12

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

MCQ▾

Question

A superconductor exhibits perfect

Choices

Choice (4) Response

a.

Diamagnetism

b.

Paramagnetic

c.

Ferrimagnetism

d.

Ferromagnetism

Question number: 13

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

MCQ▾

Question

Among the following properties describing diamagnetism identify the property that is wrongly stated.

Choices

Choice (4) Response

a.

The magnetic moment of individual electrons neutralize each other

b.

Diamagnetic material does not have permanent magnetic moment

c.

Diamagnetism is explained in terms of electromagnetic induction.

d.

Diamagnetic materials have a small positive susceptibility

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

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