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The graph between temperature and magnetic susceptibility for a paramagnetic substance 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 16
Dip circle can be used to determine the angle of dip at a place. Dip circle consists of a magnetic needle free to rotate in a vertical plane. The end points of the needle move over a vertical circular scale. This arrangement can rotate about vertical axis. The angle rotated about vertical axis can be read from a horizontal scale.

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The magnetic needle will stay in vertical position if

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 17

A dip circle can be used to determine the angle of dip at a place. A dip circle consists of a magnetic needle free to rotate in a vertical plane. The endpoints of the needle move over a vertical circular scale. This arrangement can rotate about a vertical axis. The angle rotated about the vertical axis can be read from a horizontal scale.

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 If the dip circle is now rotated about vertical axis by 90°. Now the needle is at 60° from vertical. 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 18

A dip circle can be used to determine the angle of dip at a place. A dip circle consists of a magnetic needle free to rotate in a vertical plane. The endpoints of the needle move over a vertical circular scale. This arrangement can rotate about a vertical axis. The angle rotated about the vertical axis can be read from a horizontal scale.

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 If the dip circle is now rotated about vertical axis by 90°. Now the needle is at 60° from vertical. if dip circle is further rotated about vertical axis by 60° then the apparent dip at that position will be

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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 19
A bar magnet has pole strength m and dipole moment μ. If it is cut in a transverse manner in two equal parts then pole strength and dipole moment of each half is respectively
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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 20
A bar magnet of dipole moment M is bent at mid point by 90° (in the form of English alphabet'L'). The new dipole moment of the magnet will be
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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 21
A bar magnet of dipole moment M and moment of inertia I, undergoes simple harmonic motion in the parallel plane of the uniform magnetic field B. Time period of this oscillation is given by
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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 22
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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Gamma Question Bank for Engineering Physics>Chapter 19 - Magnetism and Matter>Assignment Set-2>Q 23
At a certain place, the horizontal component B0 and the vertical component V0 of the earth's magnetic field are equal in magnitude. The total intensity at the place will be