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The pole strength of a bar magnet is 48 A m and the distance between its poles is 25 cm. The moment of the couple by which it can be placed at an angle of 30° with the uniform magnetic flux density 0.15 N A-1 m-1 will be

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Important Questions on Magnetism

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Critical Thinking>Q 11
A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be halved by rotating it, then the angle by which it is to be rotated is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Critical Thinking>Q 12
If a needle is suspended at different places on earth, then needle becomes exactly vertical and horizontal, respectively, along,
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Critical Thinking>Q 13
The lines of force of earth's magnetic field will be perpendicular to earth's surface,
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Critical Thinking>Q 14
Which one of the following directions will a compass needle show at the earth's magnetic pole?
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Critical Thinking>Q 15
A ship is to reach a place 10° south of west. In what direction should it be steered if declination at the place is 17° west?
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Critical Thinking>Q 16
At a certain place, the angle of dip is 30° and the horizontal component of earth's magnetic field is 0.50 oersted. The earth's total magnetic field is,
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Critical Thinking>Q 17
Magnetic induction due to a short magnet at a point 100 mm from the centre of magnet on equatorial line is 10 µT. The magnetic moment of the magnet is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Critical Thinking>Q 18
X and Y are two identical short bar magnets placed at the corners of a square as shown in the figure. The magnetic field at A is 0.3×10-4 T. On reversing only X, the resultant field at A is

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