Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 2

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The variation of magnetic susceptibility $(χ_{m})$ with absolute temperature $(T)$ for a Paramagnetic material is

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Important Questions on Magnetism and Matter

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 3

At a certain place a magnet makes

30

oscillations per minute in oscillation magnetometer. At another place where horizontal component of earth's magnetic field is

4

times, its time period will be

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 5

The magnetic susceptibility of which substance is small and positive?

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 7

Magnetic susceptibility of paramagnetic substance is _____ proportional to absolute temperature

T .

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 13

Give two points to compare the magnetic properties of steel and soft iron.

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 19

Define the terms retentivity and coercivity.

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 23

A bar magnet of magnetic moment

5.0 A m^{2}

has poles

20 cm

apart. Calculate the pole strength.

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 28

Three identical specimens of magnetic materials nickel, antimony and aluminium are kept in a non uniform magnetic field. Draw the modifications in the field lines in each case.

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 30

Define the terms magnetic susceptibility and magnetic permeability. Derive the relation between relative magnetic permeability and magnetic susceptibility.