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The true dip at a place is 60°. The vertical plane carrying needle is turned through 30° from magnetic meridian. The apparent dip will be

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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-2>Q 9

Orientation of two identical small bar magnet of magnetic moment ' M is as shown in figure. The magnitude of magnetic field at the point O which lies on equatorial line of one magnet and axial line of another magnet is (r>> size of magnet)

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-2>Q 10

A bar magnet of magnetic moment M is gently placed inside the two mutually perpendicular magnetic field BV=6 T and BH=2 T as shown in figure. The net torque on the bar magnet will be zero

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-2>Q 11
A bar magnet of magnetic moment M is hung by a thin cotton thread in a uniform magnetic field B→. Work done by the external agent to rotate the bar magnet from stable equilibrium position to 120° with the direction of magnetic field is (consider change in angular speed is zero)
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-2>Q 12
At a place, apparent dip angle is 60°, when the plane of the dip circle is at an angle of, 30° with the magnetic meridian. The true dip at that place is
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-2>Q 13
Which one of the following is not considered as element of earth's magnetic field?
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-2>Q 14
A short bar magnet having magnetic moment M=0.80 J T-1 is placed in uniform magnetic field of 0.30 T. If bar magnet is free to rotate in plane of field, then (Where U is potential energy and τ is torque)
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-2>Q 15
A short bar magnet of magnetic moment 53×10-2JT-1 is placed with its axis normal to the earth's horizontal magnetic field. The distance from the centre of magnet, at its equatorial position, where the resultant field makes an angle 60° with earth's horizontal field is BH=0.4×10-4 T
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment>Q 14
A magnetic needle is suspended parallel to a magnetic field. The work require to turn it through 60° is 12 J. The torque require to maintain the needle in this position will be