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Magnetic Properties of Matter — JEE Main & Advanced Physics PYQs

212 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.

212 questionsPhysicsSolutions on every page
1

A solenoid has a core made of material with relative permeability 400 . The magnetic field produced in the interior of solenoid is 1.0 T. The magnetic intensity in SI units is 10^5

JEE Main 2026 Solution View → 2

Two identical small bar magnets each of dipole moment 3 5 J/T are placed at a center to center separation of 10 cm, with their axes perpendicular to each other as shown in figure.

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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Consider a ferromagnetic material : Assertion (A) : The individual atoms i

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason(R). Assertion (A) : Magnetic monopoles do not exist. Reason (R) : Magnetic fie

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The percentage increase in magnetic field (B) when space within a current carrying solenoid is filled with magnesium (magnetic susceptibility . _ mg =1.2 10⁻⁵ ) is :

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A solenoid having area A and length ' l ' is filled with a material having relative permeability 2. The magnetic energy stored in the solenoid is :

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The relationship between the magnetic susceptibility ( ) and the magnetic permeability ( ) is given by : ( ₀ is the permeability of free space and _ r is relative permeability)

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A bar magnet has total length 2 l=20 units and the field point P is at a distance d =10 units from the centre of the magnet. If the relative uncertainty of length measurement is 1

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The coercivity of a magnet is 5 10^3 ~A / m . The amount of current required to be passed in a solenoid of length 30 ~cm and the number of turns 150 , so that the magnet gets demag

JEE Main 2024 Solution View → 10

Paramagnetic substances: A. align themselves along the directions of external magnetic field. B. attract strongly towards external magnetic field. C. has susceptibility little more

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Match List-I with List-II : Choose the correct answer from the options given below :

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The magnetic moment of a bar magnet is 0.5 Am ^2 . It is suspended in a uniform magnetic field of 8 10⁻² ~T . The work done in rotating it from its most stable to most unstable pos

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A ceiling fan having 3 blades of length 80 cm each is rotating with an angular velocity of 1200 rpm . The magnetic field of earth in that region is 0 . 5 G and angle of dip is 30 °

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Given below are two statements: Statement I : The diamagnetic property depends on temperature. Statement II : The induced magnetic dipole moment in a diamagnetic sample is always o

JEE Main 2023 Solution View → 15

A compass needle oscillates 20 times per minute at a place where the dip is 30 o and 30 times per minute where the dip is 60 o . The ratio of total magnetic field due to the earth

JEE Main 2023 Solution View → 16

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : A bar magnet dropped through a metallic cylindrical pipe takes mo

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The free space inside a current carrying toroid is filled with a material of susceptibility 2 × 10 - 2 . The percentage increase in the value of magnetic field inside the toro

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A bar magnet is released from rest along the axis of a very long vertical copper tube. After some time the magnet will

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Given below are two statements: Statement I : For diamagnetic substance - 1 ≤ x < 0 , where x is the magnetic susceptibility. Statement II : Diamagnetic substance when pl

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The current required to be passed through a solenoid of 15   cm length and 60 turns in order to demagnetise a bar magnet of magnetic intensity 2 . 4 × 10 3   A &#160

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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : Electromagnets are made of soft iron. Reason R : Soft iron has

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Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material is

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The vertical component of the earth's magnetic field is 6 × 10 - 5 T at any place where the angle of dip is 37 ° . The earth's resultant magnetic field at that pl

JEE Main 2022 Solution View → 24

A compass needle of oscillation magnetometer oscillates 20 times per minute at a place P of dip 30 ° . The number of oscillations per minute become 10 at another place Q of 60

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A magnet hung at 45 ° with magnetic meridian makes an angle of 60 ° with the horizontal. The actual value of the angle of dip is

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An electron with energy 0 . 1 keV moves at right angle to the earth's magnetic field of 1 × 10 - 4 Wbm - 2 . The frequency of revolution of the electron will be (Take mass

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At a certain place the angle of dip is 30 ° and the horizontal component of earth's magnetic field is 0 . 5 G . The earth's total magnetic field (in G ), at that certa

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The space inside a straight current carrying solenoid is filled with a magnetic material having magnetic susceptibility equal to 1 . 2 × 10 - 5 . What is fractional increase i

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A metallic rod of length 20 cm is placed in North-South direction and is moved at a constant speed of 20 m s - 1 towards East. The horizontal component of the Earth's magnetic

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The susceptibility of a paramagnetic material is 99 . The permeability of the material in Wb / A - m , is [Permeability of free space μ 0 = 4 π × 10 - 7 Wb / A - m ]

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Given below are two statements : Statement - I : Susceptibilities of paramagnetic and ferromagnetic substances increase with decrease in temperature. Statement - II : Diamagnetism

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The soft-iron is a suitable material for making an electromagnet. This is because soft-iron has

JEE Main 2022 Solution View → 33

Following plots show Magnetization ( M ) vs Magnetising field ( H ) and Magnetic susceptibility ( χ ) vs Temperature ( T ) graph : Which of the following combination will be r

JEE Main 2021 Solution View → 34

In a uniform magnetic field, the magnetic needle has a magnetic moment 9 . 85 × 10 - 2 A m - 2 and moment of inertia 5 × 10 - 6 kg m 2 . If it performs 10 complete oscill

JEE Main 2021 Solution View → 35

The value of aluminium susceptibility is 2 . 2 × 10 - 5 . The percentage increase in the magnetic field if space within a current carrying toroid is filled with aluminium is x

JEE Main 2021 Solution View → 36

Statement I : The ferromagnetic property depends on temperature. At high temperature, ferromagnet becomes paramagnet. Statement II : At high temperature, the domain wall area of a

JEE Main 2021 Solution View → 37

Choose the correct option.

JEE Main 2021 Solution View → 38

At an angle of 30 ° to the magnetic meridian, the apparent dip is 45 ° . Find the true dip:

JEE Main 2021 Solution View → 39

The magnetic susceptibility of a material of a rod is 499 . Permeability in vacuum is 4 π × 10 - 7 Hm - 1 . Absolute permeability of the material of the rod is

JEE Main 2021 Solution View → 40

Which of the following statements are correct? (A) Electric monopoles do not exist whereas magnetic monopoles exist. (B) Magnetic field lines due to a solenoid at its ends and outs

JEE Main 2021 Solution View → 41

A bar magnet of length 14 cm is placed in the magnetic meridian with its north pole pointing towards the geographic north pole. A neutral point is obtained at a distance of 18 cm f

JEE Main 2021 Solution View → 42

An aeroplane, with its wings spread 10 m , is flying at a speed of 180 km h - 1 in a horizontal direction. The total intensity of earth's field at that part is 2 . 5 × 10

JEE Main 2021 Solution View → 43

In a ferromagnetic material, below the curie temperature, a domain is defined as:

JEE Main 2021 Solution View → 44

A soft ferromagnetic material is placed in an external magnetic field. The magnetic domains:

JEE Main 2021 Solution View → 45

A paramagnetic sample shows a net magnetisation of 6 A / m when it is placed in an external magnetic field of 0 . 4 T at a temperature of 4 K . When the sample is placed in an exte

JEE Main 2020 Solution View → 46

A small bar magnet is placed with its axis at 30 o with an external magnetic field of 0 . 06 T experiences a torque of 0 . 018 Nm . The minimum work required to rotate it from its

JEE Main 2020 Solution View → 47

A perfectly diamagnetic sphere has a small spherical cavity at its centre, which is filled with a paramagnetic substance. The whole system is placed in a uniform magnetic field B &

JEE Main 2020 Solution View → 48

The figure gives experimentally measured B vs. H variation in a ferromagnetic material. The retentivity, coercivity and saturation, respectively, of the material are:

JEE Main 2020 Solution View → 49

A magnet makes 40 oscillations per minute at a place having magnetic field induction of 0.1 × 10 – 5 T . At another place, it takes 2.5 s to complete one vibration. The value of ea

NTA Abhyas JEE Main 2020 Solution View → 50

The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance x x > > d . The magnitude of force between them is proportional to x − n w

NTA Abhyas JEE Main 2020 Solution View → 51

A wire of length L = 20   c m is bent into a semi-circular arc and the two equal halves of the arc are uniformly charged with charges + Q and - Q as shown in the figure. The m

NTA Abhyas JEE Main 2020 Solution View → 52

A magnetic dipole is placed in a uniform magnetic field of intensity B , oriented along the direction of the field. If the magnetic dipole moment is M , then the maximum work an ex

NTA Abhyas JEE Main 2020 Solution View → 53

If r is the orbital radius and v is the orbital velocity of an electron in a hydrogen atom, then its magnetic dipole moment is

NTA Abhyas JEE Main 2020 Solution View → 54

A thin spherical shell of radius R is cut into two equal halves and then each of its halves is charged to the same uniform surface charge density σ . If F is the force exerted on e

NTA Abhyas JEE Main 2020 Solution View → 55

The correct set of diamagnetic substances among the following sets are

NTA Abhyas JEE Main 2020 Solution View → 56

In a uniform magnetic field of strength 0 . 15 T , a short bar magnet of magnetic moment m = 0 . 32 J T - 1 is placed. The potential energy of the magnet in its unstable equilibriu

NTA Abhyas JEE Main 2020 Solution View → 57

An electron of charge e is moving in a circular orbit of radius r around a nucleus, at a frequency υ . The magnetic moment associated with the orbital motion of the electron i

NTA Abhyas JEE Main 2020 Solution View → 58

A moving coil galvanometer, having a resistance G produces full scales deflection when a current I g flows through it. It can be converted into an ammeter of range 0 to I 0 > I

NTA Abhyas JEE Main 2020 Solution View → 59

If the magnetic moment and the pole strength of a bar magnet are 3.6 × 10 - 3   A   m 2 and 120 × 10 - 3   A   m , then its magnetic length is

NTA Abhyas JEE Main 2020 Solution View → 60

A magnetic needle free to rotate in a horizontal plane is placed at the centre of a circular current-carrying coil whose axis is perpendicular to the magnetic meridian at that plac

NTA Abhyas JEE Main 2020 Solution View → 61

Two identical short bar magnets each having magnetic moment M are placed at a distance of 2 d with their axes perpendicular to each other in a horizontal plane. The magnetic induct

NTA Abhyas JEE Main 2020 Solution View → 62

If at a distance of 40 cm at an axial position of a dipole, the "magnetic potential" (analogous to electric potential) is 2 .4 × 10 - 5 J A m - 1 , then the magnetic moment of the

NTA Abhyas JEE Main 2020 Solution View → 63

A paramagnetic material shows a net magnetization of 8 A m -1 when placed in an external magnetic field of intensity 0 .6 T at a temperature of 4   K . When th

NTA Abhyas JEE Main 2020 Solution View → 64

A magnetic dipole is acted upon by two magnetic fields which are inclined to each other at an angle of 75 o . One of the fields has a magnitude of 15 mT . The dipole attains stable

NTA Abhyas JEE Main 2020 Solution View → 65

A deflection magnetometer is placed with its arm along the east-west direction ( tan   A position) and a short bar magnet is placed symmetrically along its axis at some distan

NTA Abhyas JEE Main 2020 Solution View → 66

A long thin magnet of magnetic moment M is bent into a semi-circle. The decrease in the magnetic moment is

NTA Abhyas JEE Main 2020 Solution View → 67

The B - H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a long solenoid with 1000 turns cm - 1 . The current that should be passed in the solenoi

NTA Abhyas JEE Main 2020 Solution View → 68

The distance of two points on the axis of a magnet from its centre is 10 cm and 20 cm respectively. The ratio of magnetic intensity at these points is 12 . 5 : 1 . The length of th

NTA Abhyas JEE Main 2020 Solution View → 69

At a certain place, the angle of dip is 30 ° and the horizontal component of earth's magnetic field is 50   μT . The total magnetic field (in μT ) of the ea

NTA Abhyas JEE Main 2020 Solution View → 70

Which of these materials requires the least value of magnetic field strength to magnetize it?

NTA Abhyas JEE Main 2020 Solution View → 71

Two bar magnets A and B are placed one over the other and are allowed to Vibrate in a vibration magnetometer. They make 20 oscillations per minute when the similar poles of A and B

NTA Abhyas JEE Main 2020 Solution View → 72

A vibration magnetometer consists of two identical bar magnets placed one over the other such that they are mutually perpendicular and bisect each other. The time period of the com

NTA Abhyas JEE Main 2020 Solution View → 73

Two short bar magnets of dipole moments M and M 3 are joined at right angles to form a cross as depicted in the figure. The value of θ for which the system remains in equilibrium i

NTA Abhyas JEE Main 2020 Solution View → 74

At a place the true value of angle of dip is 60 ° . If dip circle is rotated by ϕ ° from magnetic meridian, the angle of dip is found to be tan - 1 ⁡ ( 2 ) . Then the value of ϕ is

NTA Abhyas JEE Main 2020 Solution View → 75

For protecting sensitive equipment from an external magnetic field, which among the following is the most effective solution?

NTA Abhyas JEE Main 2020 Solution View → 76

A magnet is cut in four equal parts by cutting it parallel to its length. The time period of each part, if the time period of the original magnet in the same field is T 0 , will be

NTA Abhyas JEE Main 2020 Solution View → 77

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

NTA Abhyas JEE Main 2020 Solution View → 78

The electric field on two sides of a large charged plate is shown in the diagram. The charge density on the plate in S.I. units is given by ( ε 0 is the permittivity of free space

NTA Abhyas JEE Main 2020 Solution View → 79

A deflection magnetometer is placed with its arm along the east-west direction and a bar magnet is placed along the arm of the magnetometer. Due to the magnet, the deflection obser

NTA Abhyas JEE Main 2020 Solution View → 80

The correct graph which shows the variation of paramagnetic susceptibility S with temperature T is

NTA Abhyas JEE Main 2020 Solution View → 81

A paramagnetic substance, in the form of a cube with sides 1 cm , has a magnetic dipole moment of 20 × 10 - 6 J T - 1 , when a magnetic intensity of 60 × 10 3 A m - 1 is applied. I

NTA Abhyas JEE Main 2020 Solution View → 82

The horizontal component of the Earth's magnetic field is 3.6 × 10 - 5 T where the dip angle is 60 ° . The magnitude of the Earth's magnetic field is

NTA Abhyas JEE Main 2020 Solution View → 83

A galvanometer having full scale deflection current of 10 m A and resistance 8 Ω is joined in circuit as shown. When the terminals A and B are used and C remains open, the range of

NTA Abhyas JEE Main 2020 Solution View → 84

A magnetic compass needle oscillates 30 times per minute at a place where the dip is 45 ° and 40 times per minute where the dip is 30 ° . If B 1 and B 2 are the net magnetic fields

NTA Abhyas JEE Main 2020 Solution View → 85

A magnetic needle of negligible breadth and thickness compared to its length, oscillates in a horizontal plane with a period T . The period of oscillation of each part obtained on

NTA Abhyas JEE Main 2020 Solution View → 86

Calculate the couple (in μ N m ) acting on a magnet of length 10 cm and pole strength 15 A m , kept in a field of B = 2 × 10 - 5 T at an angle of 30 ° .

NTA Abhyas JEE Main 2020 Solution View → 87

A ferromagnetic material is heated above its curie temperature. Which one of the following is the correct statement?

NTA Abhyas JEE Main 2020 Solution View → 88

Two magnets held together in earth's magnetic field when the same polarity together causes 12 v i b / min and when opposite poles 4 v i b / m i n . What is the ratio of magnetic mo

NTA Abhyas JEE Main 2020 Solution View → 89

A bar magnet of length 10 cm and pole strength 2 A m makes an angle 60 o with a uniform magnetic field of induction 50 T . The couple acting on it is

NTA Abhyas JEE Main 2020 Solution View → 90

Three identical bar magnets each of magnetic moment M are arranged in the form of an equilateral triangle such that at two vertices like poles are in contact. The resultant magneti

NTA Abhyas JEE Main 2020 Solution View → 91

The magnetic susceptibility of a material of a rod is 499 . The absolute permeability of vacuum is 4 π × 10 - 7 H m - 1 . The absolute permeability of the material of a rod is

NTA Abhyas JEE Main 2020 Solution View → 92

The potential of the electric field produced by point charge at any point ( x , y , z ) is given by V = 3 x 2 + 5 , where x , y are in metres and V is in volts. The intensity of th

NTA Abhyas JEE Main 2020 Solution View → 93

A pendulum of length L carries a negative charge - q on the bob. A positive charge + q is held at the point of support. Then, the time period of the bob is

NTA Abhyas JEE Main 2020 Solution View → 94

A bar magnet has a magnetic moment equal to 5 × 10 - 5 Wb m . It is suspended in a magnetic field which has a magnetic induction B = 8 π × 10 − 4 T . The magnet vibrates with a per

NTA Abhyas JEE Main 2020 Solution View → 95

A hoop and a solid cylinder of same mass and radius are made of a permanent magnetic material with their respective axes. But the magnetic moment of hoop is twice of solid cylinder

NTA Abhyas JEE Main 2020 Solution View → 96

The magnetic needle of a vibration magnetometer makes 12 oscillations per minute in the horizontal component of earth's magnetic field. When an external short bar magnet is placed

NTA Abhyas JEE Main 2020 Solution View → 97

Two magnets of equal mass are joined at 90 ° each other as shown in figure. Magnet N 1 S 1 has a magnetic moment 3 times that of N 2 S 2 . The arrangement is pivoted so that it is

NTA Abhyas JEE Main 2020 Solution View → 98

A magnetic compass needle oscillates 30 times per minute at a place where the dip is 45 ° and 40 times per minute where the dip is 30 ° . If B 1 and B 2 are the net magnetic fields

JEE Main 2019 Solution View → 99

Two coils ' P ' and ' Q ' are separated by some distance. When a current of 3 A flows through coil ' P ' , a magnetic flux of 10 - 3 W b passes through &#39

JEE Main 2019 Solution View → 100

A paramagnetic material has 10 28 atoms m - 3 . Its magnetic susceptibility at temperature 350 K is 2.8 × 10 - 4 . Its susceptibility at 300 K is

JEE Main 2019 Solution View → 101

A paramagnetic substance in the form of a cube with sides 1 ~cm has a magnetic dipole moment of 20 10⁻⁶ ~J / T when a magnetic intensity of 60 10³ ~A / m is applied. Its magnetic s

JEE Main 2019 Solution View → 102

At some location the horizontal component of earth's magnetic field is 18 × 10 - 6 T . At this location, magnetic needle of length 0.12 m and pole strength 1.8 Am is suspe

JEE Main 2019 Solution View → 103

A magnet of total magnetic moment 10 - 2 i ^ A m 2 is placed in a time varying magnetic field, B i ^ cos ω t where B = 1 Tesla and ω = 0.125 rad s - 1 . The work done for

JEE Main 2019 Solution View → 104

A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2 m , 100 turns, and carrying a current of 5.2 A . The coercivity of the bar magnet is:

JEE Main 2019 Solution View → 105

The B-H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a long solenoid with 1000 turns/cm.. The current that should be passed in the solenoid to d

JEE Main 2018 Solution View → 106

The B - H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a long solenoid with 1000 turns cm - 1 . The current that should be passed in the solenoi

JEE Main 2018 Solution View → 107

A magnetic needle of magnetic moment 6 .7 × 10 - 2 A m 2 and moment of inertia 7 .5 × 10 - 6 kg m 2 is performing simple harmonic oscillations in a magnetic field of 0 .

JEE Main 2017 Solution View → 108

A fighter plane of length 20 m, wing span (distance from tip of one wing to the tip of the other wing) of 15 m and height 5 m is flying towards east over Delhi. Its speed is 240 m

JEE Main 2016 Solution View → 109

Hysteresis loops for two magnetic materials A and B are given below: These materials are used to make magnets for electric generators, transformer core and electromagnet core. Then

JEE Main 2016 Solution View → 110

A short bar magnet is placed in the magnetic meridian of the earth with North Pole pointing north. Neutral points are found at a distance of 30 cm from the magnet on the East-West

JEE Main 2015 Solution View → 111

A 25 cm long solenoid has the radius 2 cm and 500 turns. It carries a current of 15 A . If it is equivalent to a magnet of the same size and magnetization M → M a g n e t i c

JEE Main 2015 Solution View → 112

An example of a perfect diamagnet is a superconductor. This implies that when a superconductor is put in a magnetic field of intensity B , the magnetic field B s inside the superco

JEE Main 2014 Solution View → 113

Three identical bars A, B and C are made of different magnetic materials. When kept in a uniform magnetic field, the field lines around them look as follows: Make the correspondenc

JEE Main 2014 Solution View → 114

The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance x x ≫ d . The magnitude of force between them is proportional to x &

JEE Main 2014 Solution View → 115

The magnetic field of earth at the equator is approximately 4 × 1 0 - 5 T . The radius of earth is 6.4 × 1 0 6 m . Then the dipole moment of the earth will be nearly of t

JEE Main 2014 Solution View → 116

The coercivity of a small magnet, where the ferromagnet gets demagnetised is 3 × 10 3 A / m . The current required to be passed in a solenoid of length 10 cm and number of tur

JEE Main 2014 Solution View → 117

The earth's magnetic field lines resemble that of a dipole at the centre of the earth. If the magnetic moment of this dipole is close to 8 10²² Am ^2 , the value of earth's magneti

JEE Main 2013 Solution View → 118

Choose the correct sketch of the magnetic field lines of a circular current loop shown by the dot and the cross .

JEE Main 2013 Solution View → 119

Two short bar magnets of length 1 cm each have magnetic moments 1 .20 A m 2 and 1 .00 A m 2 respectively. They are placed on a horizontal table parallel to each other with their N

JEE Main 2013 Solution View → 120

A bar magnet of length 6 ~cm has a magnetic moment of 4 ~J ~T ⁻¹ . Find the strength of magnetic field at a distance of 200 ~cm from the centre of the magnet along its equatorial l

JEE Main 2012 Solution View →
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