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IMPORTANT
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Identify the paramagnetic substance

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Important Questions on Magnetism

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JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 47
The universal property of all substances is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 48
Which one of the following is a non-magnetic substance?
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JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 49
Liquid oxygen remains suspended between the two pole faces of a magnet because it is
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 50
The materials suitable for making electromagnets should have
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 51
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
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 52
Which of the following is diamagnetic?
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 53
For ferromagnetic material, the relative permeability μr versus the magnetic intensity H has the following shape.
HARD
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 54
Two bar magnets of the same mass, length and breadth having magnetic moments M and 2M are joined together pole to pole and suspended in a vibration magnetometer. The time period of oscillation is 3 s. If now the polarity of one of the magnets is reversed, the time period of oscillation will be