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Magnetic Properties of Matter — NEET UG Physics PYQs

191 previous year questions from Magnetic Properties of Matter with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

191 questionsPhysicsSolutions on every page
1

A magnetizing field of 360 A/m produces a magnetic flux density B = 0.6 T in a ferromagnetic material. The permeability of the material in T-m/A is

MHT CET Medical 2026 Solution View → 2

There are four lightweight rod samples P, Q, R and S separately suspended by thread. A bar magnet is slowly brought near to each sample and the following observations are noted (a)

MHT CET Medical 2026 Solution View → 3

A paramagnetic sample shows a net magnetization of 8 A/m when placed in an external magnetic field of 0.6 T at a temperature of 4 K. When the same sample is placed in an external m

MHT CET Medical 2026 Solution View → 4

A magnetizing field of 10^3 A/m produces a magnetic flux density 4 T in an iron rod. The relative permeability of the rod will be (permeability of free space ₀ = 4 10⁻⁷ SI units)

MHT CET Medical 2026 Solution View → 5

In an experiment, the interior of a first current-carrying toroid with 1000 turns per unit length is filled with aluminum (susceptibility 2.4 10⁻⁵ ). A second, identical toroid wit

MHT CET Medical 2026 Solution View → 6

Magnetic susceptibility ( ) is related to magnetic relative permeability ( _r ) by the relation

MHT CET Medical 2026 Solution View → 7

A magnetic material has a relative permeability ( _r) of 6001 . If it is placed in a magnetizing field (magnetic intensity) of H = 2000 A/m , The total magnetic induction (B) insid

MHT CET Medical 2026 Solution View → 8

Which of the following statements is INCORRECT for diamagnetic materials? a. Relative permeability is less than one. b. Magnetic susceptibility is negative and low. c. Magnetic sus

MHT CET Medical 2026 Solution View → 9

The magnetic induction produced at the centre of the air-core solenoid is B₀ . If the air-core is replaced by an iron-core of susceptibility , the magnetic induction is B₁ . The ra

MHT CET Medical 2026 Solution View → 10

If the ratio of relative permeability and relative permittivity of a uniform medium is 1: 4 . The ratio of the magnitudes of electric field intensity (E) to the magnetic field inte

NEET 2024 Solution View → 11

The incorrect relation for a diamagnetic material (all the symbols carry their usual meaning and is a small positive number) is

NEET 2024 Solution View → 12

A sheet is placed on a horizontal surface in front of a strong magnetic pole. A force is needed to: A. hold the sheet there if it is magnetic. B. hold the sheet there if it is non-

NEET 2024 Solution View → 13

The magnetic moment of an iron bar is M . It is now bent in such a way that it forms an arc section of a circle subtending an angle of 60^ at the centre. The magnetic moment of thi

NEET 2024 Solution View → 14

Match List-I with List-II. array ll|rl & List-I & & array l List-II (Susceptibility ( )) array A. & Diamagnetic & I. & =0 B. & Ferromagnetic & II. & 0 -1 C. & Paramagnetic & III. &

NEET 2024 Solution View → 15

The magnetic moment and moment of inertia of a magnetic needle as shown are, respectively, 1.0 10⁻² ~A ~m and 10⁻⁶ ^2 ~kg ~m ^2 . If it completes 10 oscillations in 10 s , the magn

NEET 2024 Solution View → 16

The variation of susceptibility ( ) with absolute temperature (T) for a paramagnetic material is represented as:

NEET 2023 Solution View → 17

An iron rod of susceptibility 599 is subjected to a magnetising field of 1200   A   m – 1 . The permeability of the material of the rod is: μ 0 = 4 π &#21

NEET 2020 Solution View → 18

The electric field of a plane electromagnetic wave of amplitude 2 ~V ~m ⁻¹ varies with time and propagates along z -axis. The average energy density of the magnetic field (in J m ⁻

AIIMS 2019 Solution View → 19

Assertion : Only a change in magnetic flux will maintain an induced current in the coil. Reason : The presence of large magnetic flux through a coil maintains a current in the coil

AIIMS 2019 Solution View → 20

Assertion : Paramagnetic substances get poorly attracted in magnetic field. Reason : Because magnetic dipoles are aligned along external magnetic field weakly.

AIIMS 2019 Solution View → 21

Coercivity and retentivity of soft iron is

JIPMER 2019 Solution View → 22

Induction furnace uses ..... to produce heat.

JIPMER 2019 Solution View → 23

At a point A on the earth’s surface the angle of dip, δ = + 2 5 ° . At a point B on the earth’s surface, the angle of dip, δ = - 2 5 ° . We can inte

NEET 2019 Solution View → 24

The relations amongst the three elements earth's magnetic field, namely horizontal component H , vertical component V and dip are, ( B _ E = . total magnetic field )

NEET 2019 Solution View → 25

The electric field of a plane electromagnetic wave of amplitude 2 ~V ~m ⁻¹ varies with time and propagates along z -axis. The average energy density of the magnetic field (in J m ⁻

NEET 2019 Solution View → 26

Assertion : Paramagnetic substances get poorly attracted in magnetic field. Reason : Because magnetic dipoles are aligned along external magnetic field weakly.

NEET 2019 Solution View → 27

Assertion : Only a change in magnetic flux will maintain an induced current in the coil. Reason : The presence of large magnetic flux through a coil maintains a current in the coil

NEET 2019 Solution View → 28

Coercivity and retentivity of soft iron is

NEET 2019 Solution View → 29

Induction furnace uses ..... to produce heat.

NEET 2019 Solution View → 30

A paramagnetic substance of susceptibility 3 10⁻⁴ is placed in a magnetising field of 4 10⁻⁴ ~A ~m ⁻¹ . Then the intensity of magnetisation in the units of A m ⁻¹ is

AIIMS 2018 Solution View → 31

A bar magnet of magnetic moment M and moment of inertia I is freely suspended such that the magnetic axial line is in the direction of magnetic meridian. If the magnet is displaced

AIIMS 2018 Solution View → 32

A copper rod is suspended in a nonhomogeneous magnetic field region. The rod when in equilibrium will align itself

AIIMS 2018 Solution View → 33

A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up, out

NEET 2018 Solution View → 34

A bar magnet of magnetic moment M and moment of inertia I is freely suspended such that the magnetic axial line is in the direction of magnetic meridian. If the magnet is displaced

NEET 2018 Solution View → 35

A paramagnetic substance of susceptibility 3 10⁻⁴ is placed in a magnetising field of 4 10⁻⁴ ~A ~m ⁻¹ . Then the intensity of magnetisation in the units of A m ⁻¹ is

NEET 2018 Solution View → 36

A copper rod is suspended in a nonhomogeneous magnetic field region. The rod when in equilibrium will align itself

NEET 2018 Solution View → 37

A deflection magnetometer is adjusted in the usual way. When a magnet is introduced, the deflection observed is , and the period of oscillation of the needle in the magnetometer is

AIIMS 2017 Solution View → 38

The turns of a solenoid, designed to provide a given magnetic flux density along its axis, are wound to fill the space between two concentric cylinders of fixed radii. How should t

JIPMER 2017 Solution View → 39

If θ 1 and θ 2 be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip θ is given by

NEET 2017 Solution View → 40

A deflection magnetometer is adjusted in the usual way. When a magnet is introduced, the deflection observed is , and the period of oscillation of the needle in the magnetometer is

NEET 2017 Solution View → 41

The turns of a solenoid, designed to provide a given magnetic flux density along its axis, are wound to fill the space between two concentric cylinders of fixed radii. How should t

NEET 2017 Solution View → 42

The angle of dip at a certain place where the horizontal and vertical components of the earth's magnetic field are equal is

AIIMS 2016 Solution View → 43

Assertion : Magnetic field is useful in producing parallel beam of charged particle. Reason : Magnetic field inhibits the motion of charged particle moving across it.

AIIMS 2016 Solution View → 44

Assertion : In water, value of magnetic field decreases. Reason: Water is a diamagnetic substance.

AIIMS 2016 Solution View → 45

Assertion : Magnetic field lines are continuous and closed. Reason : Magnetic monopole does not exist.

AIIMS 2016 Solution View → 46

The total charge induced in a conducting loop when it is moved in magnetic field depends on

JIPMER 2016 Solution View → 47

The magnetic susceptibility is negative for:

NEET 2016 Solution View → 48

The angle of dip at a certain place where the horizontal and vertical components of the earth's magnetic field are equal is

NEET 2016 Solution View → 49

Assertion : In water, value of magnetic field decreases. Reason: Water is a diamagnetic substance.

NEET 2016 Solution View → 50

Assertion : Magnetic field is useful in producing parallel beam of charged particle. Reason : Magnetic field inhibits the motion of charged particle moving across it.

NEET 2016 Solution View → 51

Assertion : Magnetic field lines are continuous and closed. Reason : Magnetic monopole does not exist.

NEET 2016 Solution View → 52

The total charge induced in a conducting loop when it is moved in magnetic field depends on

NEET 2016 Solution View → 53

The temperature of transition from ferromagnetic property to paramagnetic property is called

AIIMS 2015 Solution View → 54

The angles of dip at the poles and the equator respectively are

AIIMS 2015 Solution View → 55

A thin bar magnet of length 2 L is bent at the mid-point so that the angle between them is 60^ . The new length of the magnet is

JIPMER 2015 Solution View → 56

The temperature of transition from ferromagnetic property to paramagnetic property is called

NEET 2015 Solution View → 57

The angles of dip at the poles and the equator respectively are

NEET 2015 Solution View → 58

A thin bar magnet of length 2 L is bent at the mid-point so that the angle between them is 60^ . The new length of the magnet is

NEET 2015 Solution View → 59

Magnetic field of the earth is H=0.3 ~g . A magnet is vibrating 5 oscillations per min then the dippreciation required in the magnetic field of the earth of increase time period up

JIPMER 2014 Solution View → 60

Magnetic field of the earth is H=0.3 ~g . A magnet is vibrating 5 oscillations per min then the dippreciation required in the magnetic field of the earth of increase time period up

NEET 2014 Solution View → 61

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 magnetic dipole moment will be

NEET 2013 Solution View → 62

Assertion : A superconductor is a perfect diamagnetic substance. Reason : A superconductor is a perfect conductor.

AIIMS 2012 Solution View → 63

A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It

NEET 2012 Solution View → 64

Assertion : A superconductor is a perfect diamagnetic substance. Reason : A superconductor is a perfect conductor.

NEET 2012 Solution View → 65

Assertion : Magnetic force between two short magnets, when they are co-axial follows inverse square law of distance. Reason : The magnetic forces between two poles do not follow in

AIIMS 2011 Solution View → 66

Which of the following substances magnetic susceptibility _m is negative?

AIIMS 2011 Solution View → 67

A short bar magnet of magnetic moment 0.4 ~J ~T ⁻¹ is place in a uniform magnetic field of 0.16 ~T . The magnet is stable equilibrium when the potential energy is

NEET 2011 Solution View → 68

There are four light-weight-rod samples A, B, C , D separately suspended by threads. A bar magnet is slowly brought near each sample and the following observations are noted (i) A

NEET 2011 Solution View → 69

Which of the following substances magnetic susceptibility _m is negative?

NEET 2011 Solution View → 70

Assertion : Magnetic force between two short magnets, when they are co-axial follows inverse square law of distance. Reason : The magnetic forces between two poles do not follow in

NEET 2011 Solution View → 71

Which of the following is true regarding dimagnetic substances (symbols have their usual meaning)

AIIMS 2010 Solution View → 72

Assertion : The magnetic poles of earth do not coincide with the geographic poles. Reason: The discrepancy between the orientation of a compass and true north-south direction is kn

AIIMS 2010 Solution View → 73

A frog can be levitated in magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as

JIPMER 2010 Solution View → 74

A vibration magnetometer placed in magnetic meridian has a small bar magnet. The magnet executes oscillations with a time period of 2 ~s in earth's horizontal magnetic field of 24

NEET 2010 Solution View → 75

Electromagnets are made of soft iron because soft iron has

NEET 2010 Solution View → 76

The magnetic moment of a diamagnetic atom is

NEET 2010 Solution View → 77

Two identical bar magnets are fixed with their centres at a distance d apart. A stationary charge Q is placed at P in between the gap of the two magnets at a distance D from the ce

NEET 2010 Solution View → 78

Which of the following is true regarding dimagnetic substances (symbols have their usual meaning)

NEET 2010 Solution View → 79

Assertion : The magnetic poles of earth do not coincide with the geographic poles. Reason: The discrepancy between the orientation of a compass and true north-south direction is kn

NEET 2010 Solution View → 80

A frog can be levitated in magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as

NEET 2010 Solution View → 81

Assertion : Magnetic susceptibillity is a pure number. Reason : The value of magnetic susceptibility for vacuum is one.

AIIMS 2009 Solution View → 82

If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is

NEET 2009 Solution View → 83

A bar magnet having a magnetic moment of 2 10^4 JT ⁻¹ is free to rotate in a horizontal plane. A horizontal magnetic field B =6 10⁻⁴ ~T exists in the space. The work done in taking

NEET 2009 Solution View → 84

A bar magnet having a magnetic movement of 2 10^4 JT ⁻¹ is free to rotate in a horizontal plane. A horizontal magnetic field B=6 10⁻⁴T exists in the space. The work done in taking

NEET 2009 Solution View → 85

The magnetic force acting on a charged particle of charge -2 c in a magnetic field of 2 ~T acting in y direction, when the particle velocity is (2 i +3 j ) 10^6 ~ms ⁻¹ , is :

NEET 2009 Solution View → 86

If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is :

NEET 2009 Solution View → 87

Assertion : Magnetic susceptibillity is a pure number. Reason : The value of magnetic susceptibility for vacuum is one.

NEET 2009 Solution View → 88

The intensity of magnetic field due to an isolated pole of strength (m_p ) at a point distant (r ) from it will be

AIIMS 2008 Solution View → 89

Assertion : We cannot think of magnetic field configuration with three poles. Reason : A bar magnet does exert a torque on itself due to its own field.

AIIMS 2008 Solution View → 90

The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the

JIPMER 2008 Solution View → 91

Curie temperatures is the temperature above which

NEET 2008 Solution View → 92

Curie temperature is the temperature above which

NEET 2008 Solution View → 93

The intensity of magnetic field due to an isolated pole of strength (m_p ) at a point distant (r ) from it will be

NEET 2008 Solution View → 94

Assertion : We cannot think of magnetic field configuration with three poles. Reason : A bar magnet does exert a torque on itself due to its own field.

NEET 2008 Solution View → 95

The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the

NEET 2008 Solution View → 96

The magnetic susceptibility of an ideal diamagnetic substance is

AIIMS 2007 Solution View → 97

Assertion : Ferro magnetic substances become paramagnetic above Curie temperature. Reason : Domains are destroyed at high temperature.

AIIMS 2007 Solution View → 98

If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by _d , _p and _f respectively, then

JIPMER 2007 Solution View → 99

Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show:

NEET 2007 Solution View → 100

The magnetic susceptibility of an ideal diamagnetic substance is

NEET 2007 Solution View → 101

Assertion : Ferro magnetic substances become paramagnetic above Curie temperature. Reason : Domains are destroyed at high temperature.

NEET 2007 Solution View → 102

If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by _d , _p and _f respectively, then

NEET 2007 Solution View → 103

Assertion : Diamagnetic materials can exhibit magnetism. Reason : Diamagnetic materials have permanent magnetic dipole moment.

AIIMS 2006 Solution View → 104

Above curie temperature:

NEET 2006 Solution View → 105

Assertion : Diamagnetic materials can exhibit magnetism. Reason : Diamagnetic materials have permanent magnetic dipole moment.

NEET 2006 Solution View → 106

If the magnetic dipole of an atom of diamagnetic material, paramagnetic material are denoted by _d, _p and _f respectively, then:

NEET 2005 Solution View → 107

Liquid oxygen remains suspended between two pole faces of a magnet because it is

AIIMS 2004 Solution View → 108

Assertion : The true geographic north direction is found by using a compass needle. Reason : The magnetic meridian of the earth is along the axis of rotation of the earth.

AIIMS 2004 Solution View → 109

Assertion : A disc-shaped magnet is leviated above a superconducting material that has been cooled by liquid nitrogen. Reason : Superconductors repel a magnet.

AIIMS 2004 Solution View → 110

Liquid oxygen remains suspended between two pole faces of a magnet because it is

NEET 2004 Solution View → 111

Assertion : The true geographic north direction is found by using a compass needle. Reason : The magnetic meridian of the earth is along the axis of rotation of the earth.

NEET 2004 Solution View → 112

Assertion : A disc-shaped magnet is leviated above a superconducting material that has been cooled by liquid nitrogen. Reason : Superconductors repel a magnet.

NEET 2004 Solution View → 113

A frog can be levitated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as

AIIMS 2003 Solution View → 114

A bar magnet is oscillating in the Earth's magnetic field with a period T . What happens to its period and motion if its mass is quadrupled?

NEET 2003 Solution View → 115

A diamagnetic material in a magnetic field moves:

NEET 2003 Solution View → 116

According to Curie's law, the magnetic susceptibility of a substance at an absolute temperature T is proportional to:

NEET 2003 Solution View → 117

A frog can be levitated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as

NEET 2003 Solution View → 118

The magnetic needle of a tangent galvanometer is deflected at an angle 30^ due to a magnet. The horizontal component of earth's magnetic field 0.34 10⁻⁴ ~T is along the plane of th

AIIMS 2002 Solution View → 119

Assertion : We cannot think of a magnetic field configuration with three poles. Reason : A bar magnet does exert a torque on itself due to its own field.

AIIMS 2002 Solution View → 120

Two bar magnets having geometry with magnetic moments M and 2 M are first placed in such a way that their similar poles are same side then its time period of oscillation is T₁ . No

NEET 2002 Solution View →
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