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Magnetism and Matter


Previous Years Questions

MCQ (Single Correct Answer)

A big circular coil of 1000 turns and average radius 10 m is rotating about its horizontal diameter at 2 rad s$$-$$1. If...
NEET 2022
A uniform conducting wire of length 12a and resistance 'R' is wound up as a current carrying coil in the shape of ,(i) a...
NEET 2021
In the product$$\overrightarrow F = q\left( {\overrightarrow v \times \overrightarrow B } \right)$$$$ = q\overrightarr...
NEET 2021
A thick current carrying cable of radius 'R' carries current 'I' uniformly distributed across its cross section. The var...
NEET 2021
An iron rod of susceptibility 599 is subjected to a magnetizing field of 1200 A m-1. The permeability of the material of...
NEET 2020 Phase 1
At a point A on the earth’s surface the angle of dip, $$\delta $$ = + 25o. At a point B on the earth's surface the angle...
NEET 2019
A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet...
NEET 2018
A 250-turn rectangular coil of length 2.1 cm and width 1.25 cm carries a current of 85 $$\mu $$A and subjected to a magn...
NEET 2017
If $$\theta $$1 and $$\theta $$2 be the apparent angles of dip observed in two vertical planes at right angles to each o...
NEET 2017
The magnetic susceptibility is negative for
NEET 2016 Phase 1
A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. The ene...
NEET 2016 Phase 2
A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire is suspended vertically in a uniform magneti...
AIPMT 2015
Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole momen...
AIPMT 2014
A bar magnet of length $$'l'$$ and magnetic dipole moment 'M' is bent in the form of an arc as shown in figure. The new ...
NEET 2013
A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B. If a force F is experienced by ea...
NEET 2013 (Karnataka)
A current loop in a magnetic field
NEET 2013
A magnetic needle suspended parallel to a magnetic field requires $$\sqrt 3 J$$ of work to turn it through 60o. The torq...
AIPMT 2012 Mains
A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It
AIPMT 2012 Prelims
A short bar magnet of magnetic moment 0.4 J T$$-$$1 is placed in a uniform magnetic field of 0.16 T. The magnet is in st...
AIPMT 2011 Mains
There are four light-weight-rod samples A, B, C, D separately suspended by threads. A bar magnet is slowly brought near ...
AIPMT 2011 Prelims
Two identical bar magnets are fixed with their centers at a distance d apart. A stationary charge Q is placed at P in be...
AIPMT 2010 Mains
The magnetic moment of a diamagnetic action is
AIPMT 2010 Mains
A vibration magnetometer placed in magnetic meridian has a small bar magnet. The magnet executes oscillations with a ti...
AIPMT 2010 Prelims
Electromagnets are made of soft iron because soft iron has
AIPMT 2010 Prelims
A bar magnet having a magnetic moment of 2 $$ \times $$ 104 J T$$-$$1 is free to rotate in a horizontal plane. A horizon...
AIPMT 2009
If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
AIPMT 2009
Curie temperature above which
AIPMT 2008
A charged particle (charge q) is moving in a circle of radius R with uniform speed v. The associated magnetic moment $$\...
AIPMT 2007
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then ...
AIPMT 2007
Curie temperature above which
AIPMT 2006
If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are d...
AIPMT 2005
A coil in the shape of an equilateral triangle of side $$l$$ is suspended between the pole pieces of a permanent magnet ...
AIPMT 2005
A bar magnet is oscillating in the Earth's magnetic field with a period T. What happens to its period and motion if its ...
AIPMT 2003
According to Curie's law, the magnetic susceptibility of a substance at an absolute temperature $$T$$ is proportional to...
AIPMT 2003
A diamagnetic material in a magnetic field moves
AIPMT 2003
Two bar magnets having same geometry with magnetic moments M and 2M, are firstly placed in such a way that their similar...
AIPMT 2002
Tangent galvanometer is used to measure
AIPMT 2001
Among which the magnetic susceptibility does not depened on the temperature ?
AIPMT 2001

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Class 12