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An iron rod of length L and magnetic moment M is bent in the form of a semicircle. Now, its magnetic moment will be
 

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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>Competitive Thinking>Q 47
The effective length of a magnet is 31.4 cm and its pole strength is 0.8 A m. The magnetic moment, if it is bent in the form of a semicircle is, in A m2
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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>Competitive Thinking>Q 48
When a ferromagnetic material is heated to a temperature above its Curie temperature, the material
 
EASY
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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>Competitive Thinking>Q 49

Assertion: Susceptibility is defined as the ratio of intensity of magnetisation I to magnetic intensity H.

Reason: Greater the value of susceptibility, smaller the value of intensity of magnetisation I. 

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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>Evaluation Test>Q 1
A bar of diamagnetic substance is placed in a magnetic field with its length making angle θ with the direction of the magnetic field. How will the bar behave?
 
EASY
MHT-CET
IMPORTANT
MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Evaluation Test>Q 2
The most appropriate I-H curve for a paramagnetic substance 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>Evaluation Test>Q 3
A solenoid has a core of a material having relative permeability 500. The windings of the solenoid are insulated from the core and carry a current of 1 A. If the number of turns is 500 per metre, the magnetization is
HARD
MHT-CET
IMPORTANT
MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Evaluation Test>Q 4
A charge 2Q is circulating with constant speed  2X  in a semicircular loop of wire of radius r. The magnetic moment of this loop 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>Evaluation Test>Q 5
The space within a current-carrying toroid is filled with tungsten of susceptibility 4.6×10-5. The percentage increase in the magnetic field is