EASY
MHT-CET
IMPORTANT
Earn 100

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

Reason: Iron is a magnetic substance.

50% studentsanswered this correctly

Important Questions on Magnetism

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>Critical Thinking>Q 1
The magnetic induction B and the force F on a pole m are related by
 
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>Critical Thinking>Q 2
Magnetic field intensity due to a dipole varies as xn, where n is
 
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>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?
 
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>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?
 
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>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
 
MEDIUM
MHT-CET
IMPORTANT
MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Critical Thinking>Q 6
The electron in the hydrogen atom is moving with a speed of 2.5×106 m s-1 in an orbit of radius 0.5 A. Magnetic moment of the revolving electron is
 
MEDIUM
MHT-CET
IMPORTANT
MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Critical Thinking>Q 7

The electron in the hydrogen atom revolves around the nucleus in an orbit of radius 0.5 A. What is the equivalent magnetic moment, if the frequency of revolution of the electron is 1010 MHz?

 

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>Critical Thinking>Q 8
A charge q is circulating with constant speed v in a semicircular loop of wire of radius R. The magnetic moment of this loop is