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How does a paramagnetic material behave in the presence of an external magnetic field? Explain with the help of an appropriate diagram.

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 47
A magnetising field of 1600 A m-1 produces a magnetic flux of 4.8×10-5 Wb in an iron bar of cross-sectional area 0.4 cm2. Calculate its Magnetic permeability
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 48
The susceptibility of iron is greater than that of aluminium. What do you infer from this?
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 48
Explain why a ferromagnetic material is used as a device for storing memory.
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 49
Two small magnets are placed horizontally perpendicular to the magnetic meridian. Their north poles are at 30 cm east and 20 cm west from a compass needle. If the compass needle remains undeflected, compare the magnetic moments of the magnets.
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 50
A magnetising field of 1500 A m-1 produces a magnetic flux density 0.48 Wb m-2 in an iron bar. Calculate magnetic permeability and susceptibility of iron bar used.
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 51
Distinguish between diamagnetic and ferromagnetic substances in respect of (i) intensity of magnetisation, (ii) behaviour in a non-uniform magnetic field and (iii) susceptibility.
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 51
If actual angle of dip at a place is δ and δ1, δ2 are apparent angles of dip in two mutually perpendicular planes, then prove that cot2δ=cot2δ1+cot2δ2.
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 52
A compass needle having magnetic moment 40 A m2 is pointing towards north at a place where horizontal component of earth magnetic field is 80μWb m-2 If torque acting on the needle is 1.6×10-3 N-m, then calculate angle of dip at the place.