NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 630 - 634 of 2320

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Question number: 630

» Magnetic Effects of Current and Magnetism » Electromagnets and Permanent Magnets

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MCQ▾

Question

The material of permanent magnet has

Choices

Choice (4)Response

a.

Low retentivity, high coercivity

b.

High retentivity, high coercivity

c.

Low retentivity, low coercivity

d.

High retentivity, low coercivity

Question number: 631

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

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MCQ▾

Question

If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material denoted by respectively then

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 632

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

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MCQ▾

Question

An electron and a proton having same kinetic energy enter a magnetic field at right angles. If and represents the radii of curvature of circular path than is,

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 633

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

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MCQ▾

Question

A beam of protons is moving horizontally towards you. As it approaches, it passes through a magnetic field directed downward. The beam deflects-

Finding magnetic field direction in a matrix

Finding Magnetic Field Direction in a Matrix

Choices

Choice (4)Response

a.

Does not deflect

b.

To your left side

c.

To your right side

d.

Nothing can be said

Question number: 634

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

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MCQ▾

Question

If a diamagnetic substance is brought near north or South Pole of a bar magnet, it is

Choices

Choice (4)Response

a.

Repelled by the poles

b.

Repelled by the North Pole and attracted by the South Pole

c.

Attracted by the North Pole and repelled by the South Pole

d.

Attracted by the poles

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