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Curie-Weiss law is obeyed by cobalt at a temperature
 

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Important Questions on Magnetism

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Classical Thinking>Q 41
When a magnetic substance is heated, then
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Classical Thinking>Q 42
Assertion: The susceptibility of diamagnetic materials does not depend upon temperature. Reason: Every atom of a diamagnetic material is not a complete magnet in itself.
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Classical Thinking>Q 43

Assertion: To protect any instrument from external magnetic field, it is put inside an iron box.

Reason: Iron is a magnetic substance.

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Critical Thinking>Q 1
The magnetic induction B and the force F on a pole m are related by
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Critical Thinking>Q 2
Magnetic field intensity due to a dipole varies as xn, where n is
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Critical Thinking>Q 3
The magnetic dipole moment of the earth is 6.4×1021A m2 . If we assume it to be due to a current loop wound around the magnetic equator of the earth, then what should be the magnitude of the current, if the equatorial radius is 6.4×106 m?
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Critical Thinking>Q 4
A current of 10 A is flowing through a circular coil of 5 turns, each of radius $7 \mathrm{cm}$. The coil lies in the $\mathrm{X}-\mathrm{Y}$ plane. What is the magnitude and direction of the magnetic dipole moment associated with it?
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Critical Thinking>Q 5
A steel wire of length l'' has a magnetic moment M. It is bent in L shape having equal size of arm. The new magnetic moment is