Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 22

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A bar magnet of dipole moment, $M$ is cut in four equal parts in a longitudinal manner. The dipole moment of each part is,

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Important Questions on Magnetism and Matter

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 23

At a certain place, the horizontal component

B_{0}

and the vertical component

V_{0}

of the earth's magnetic field are equal in magnitude. The total intensity at the place will be

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 24

A magnetic needle lying parallel to a magnetic field requires

X

units of work to turn it through

60 ° .

The torque necessary to maintain the needle in this position is

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 25

At a place, the horizontal and vertical components of the earth's field are

4.5 \times 10^{- 5}

and

6 \times 10^{- 5} T .

The total field of the earth of the place is

\dots \times 10^{- 5} T .

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 26

At a place, if earth's horizontal and vertical component of magnetic field are equal, then angle of dip at that place is

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 27

At a certain place, the horizontal component of earth's magnetic field is

\frac{1}{\sqrt{3}}

times the vertical component. The angle of dip at that place is

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 28

Two magnets of equal magnetic moments

M

each are placed as shown in figure below. The resultant magnetic moment is

M .

Then value of

θ

is

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 29

χ_{1}

and

χ_{2}

are susceptibility of a diamagnetic substance at temperature,

T_{1} K

and

T_{2} K

respectively. Then

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 30

For a paramagnetic substance