NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 535 - 540 of 2184

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Question number: 535

» Magnetic Effects of Current and Magnetism » Bar Magnet

Edit
Assertion-Reason▾

Question

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 false

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: 536

» Magnetic Effects of Current and Magnetism » Hysteresis

Edit
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.

Retentivity

b.

Coercive force

c.

None

d.

Lorentz force

Question number: 537

» Magnetic Effects of Current and Magnetism » Cyclotron

Edit
MCQ▾

Question

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

Choices

Choice (4) Response

a.

α-particle

b.

neutron

c.

Electron

d.

proton

Question number: 538

» Magnetic Effects of Current and Magnetism » Cyclotron

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

Cyclotron does not accelerate electron.

Reason (Ꭱ)

Mass of the electron is very small.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 539

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

Edit
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.

Ferromagnetic

b.

Diamagnetic

c.

Paramagnetic

d.

Antiferromagnetic

Question number: 540

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

Edit
MCQ▾

Question

Diamagnetic substances are

Choices

Choice (4) Response

a.

Strongly repelled by magnets

b.

Feebly repelled by magnets

c.

Feebly attracted by magnets

d.

Strongly attracted by magnets