NEET Physics: Questions 629 - 632 of 2142

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Question number: 629

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

MCQ▾

Question

The material of permanent magnet has

Choices

Choice (4) Response

a.

High retentivity, high coercivity

b.

High retentivity, low coercivity

c.

Low retentivity, high coercivity

d.

Low retentivity, low coercivity

Question number: 630

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

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 631

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

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 632

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

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

In figure cross indicate that the magnetic field directed downward, and the deflection of proton beam also shown in figure.

Choices

Choice (4) Response

a.

Nothing can be said

b.

To your left side

c.

Does not deflect

d.

To your right side

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