NEET Physics: Questions 534 - 539 of 2098

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Question number: 534

» Magnetic Effects of Current and Magnetism » Bar Magnet

Assertion-Reason▾

Assertion (Ꭺ)

We cannot think of magnetic field configuration with three poles.

Reason (Ꭱ)

A bar magnet does not exert a torque on itself due to its own field.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is false but Ꭱ is true

d.

Ꭺ is true but Ꭱ is false

Question number: 535

» Magnetic Effects of Current and Magnetism » Hysteresis

MCQ▾

Question

In the hysteresis cycle, the value of H needed to make the intensity of magnetization zero is called

Choices

Choice (4) Response

a.

Coercive force

b.

Retentivity

c.

Lorentz force

d.

None

Question number: 536

» Magnetic Effects of Current and Magnetism » Cyclotron

MCQ▾

Question

Which of these particles in motion is not affected by magnetic field B?

Choices

Choice (4) Response

a.

α-particle

b.

proton

c.

neutron

d.

Electron

Question number: 537

» Magnetic Effects of Current and Magnetism » Cyclotron

Assertion-Reason▾

Assertion (Ꭺ)

Cyclotron does not accelerate electron.

Reason (Ꭱ)

Mass of the electron is very small.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 538

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

MCQ▾

Question

If a magnetic substance is kept in a magnetic field, then which of the following substance is thrown out?

Choices

Choice (4) Response

a.

Antiferromagnetic

b.

Paramagnetic

c.

Diamagnetic

d.

Ferromagnetic

Question number: 539

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

MCQ▾

Question

Diamagnetic substances are

Choices

Choice (4) Response

a.

Feebly attracted by magnets

b.

Strongly repelled by magnets

c.

Feebly repelled by magnets

d.

Strongly attracted by magnets

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