NEET-UG SERIES Physics
Magnetism And Matter
31 previous year questions.
Volume: 31 Ques
Yield: High
High-Yield Trend
3
2024 1
2023 2
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2019 2
2017 1
2016 1
2015 1
2014 1
2013 2
2012 3
2010 1
2009 2
2006 2
2005 Chapter Questions 31 MCQs
01
PYQ 1994
medium
physics ID: neet-ug-
A bar magnet is oscillating in the earth's magnetic field with a period . What happens to its period and motion if its mass is quadrupled?
1
Motion remains SH with time period = 4T
2
Motion remains SH and period remains nearly constant
3
Motion remains SH with time period
4
Motion remains SH with time period = 2T
02
PYQ 1999
medium
physics ID: neet-ug-
If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
1
Repelled by the north pole and attracted by the south pole
2
Attracted by the north pole and repelled by the south pole
3
Attracted by both the poles
4
Repelled by both the poles
03
PYQ 2000
easy
physics ID: neet-ug-
Which species does not exhibits paramagnetism:
1
2
3
4
04
PYQ 2001
medium
physics ID: neet-ug-
Among which the magnetic susceptibility does not depend on the temperature
1
Dia-magnetis
2
Paramagnetis
3
Ferro-magnetism
4
Ferrite
05
PYQ 2003
medium
physics ID: neet-ug-
A bar magnet is oscillating in the Earth's magnetic field with a period T. What happens to this period and motion if this mass is quadrupled:
1
Motion remains S.H. with time period =
2
Motion remains S.H. with time period = 2T
3
Motion remains S.H. with time period = 4T
4
Motion remains S.H. with time and period remains nearly constant
06
PYQ 2003
medium
physics ID: neet-ug-
According to Curie's law, the magnetic susceptibility of a substance at an absolute temperature is proportional to
1
1 /T
2
T
3
4
07
PYQ 2003
medium
physics ID: neet-ug-
A diamagnetic material in a magnetic field moves
1
from stronger to the weaker parts of the field
2
from weaker to the stronger parts of the field
3
perpendicular to the field
4
in none of the above directions
08
PYQ 2005
medium
physics ID: neet-ug-
A coil in the shape of an equilateral triangle of side l is suspended between the pole pieces of a permanent magnet such that is in plane of the coil. If due to a current i in the triangle a torque acts on it, the side l of the triangle is
1
2
3
4
09
PYQ 2005
medium
physics ID: neet-ug-
If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted ny and respectively, then
1
and
2
and
3
and
4
and
10
PYQ 2006
medium
physics ID: neet-ug-
Above Curie temperature :
1
a ferromagnetic substance becomes paramagnetic
2
a paramagnetic substance becomes diamagnetic
3
a diamagnetic substance becomes paramagnetic
4
a paramagnetic substance becomes ferromagnetic
11
PYQ 2006
medium
physics ID: neet-ug-
Above Curie temperature :
1
a ferromagnetic substance becomes paramagnetic
2
a paramagnetic substance becomes diamagnetic
3
a diamagnetic substance becomes paramagnetic
4
a paramagnetic substance becomes ferromagnetic
12
PYQ 2009
medium
physics ID: neet-ug-
A bar magnet having a magnetic movement of is free to rotate in a horizontal plane. A horizontal magnetic field T exists in the space. The work done in taking the magnet slowly from a direction parallel to the field to a direction from the field is :
1
12 J
2
6 J
3
2 J
4
0.6 J
13
PYQ 2010
medium
physics ID: neet-ug-
The magnetic moment of a diamagnetic atom is
1
much greater than one
2
1
3
between zero and one
4
equal to zero
14
PYQ 2010
medium
physics ID: neet-ug-
A vibration magnetometer placed in magnetic meridian has a small bar magnet. The magnet executes oscillations with a time period of sec in earth's horizontal magnetic field of microtesla. When a horizontal field of microtesla is produced opposite to the earth's field by placing a current carrying wire, the new time period of magnet will be
1
1 s
2
2 s
3
3 s
4
4 s
15
PYQ 2010
medium
physics ID: neet-ug-
Electromagnets are made of soft iron because soft iron has
1
low retentivity and high coercive force
2
high retentivity and high coercive force
3
low retentivity and low coercive force
4
high retentivity and low coercive force
16
PYQ 2012
medium
physics ID: neet-ug-
A magnetic needle suspended parallel to a magnetic field requires of work to turn it through The torque needed to maintain the needle in this position will be
1
2
3
4
17
PYQ 2012
medium
physics ID: neet-ug-
A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It.
1
will become rigid showing no movement
2
will stay in any position
3
will stay in north-south direction only
4
will stay in east-west direction only
18
PYQ 2013
easy
physics ID: neet-ug-
A bar magnet of length ' ' and magnetic dipole moment 'M' is bent in the form of an arc as shown in figure. The new magnetic dipole moment will be
1
2
3
4
19
PYQ 2014
medium
physics ID: neet-ug-
Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment . Which configuration has highest net magnetic dipole moment?
1
-1
2
-2
3
-3
4
-4
20
PYQ 2015
medium
physics ID: neet-ug-
A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire is suspended vertically in a uniform magnetic field of strength 0.2 Weber/ . The coil carries a current of 2 A. If the plane of the coil is inclined at an angle of 30 with the direction of the field, the torque required to keep the coil in stable equilibrium will be
1
0.24 Nm
2
0.12Nm
3
0.15Nm
4
0.20 Nm
21
PYQ 2016
easy
physics ID: neet-ug-
A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. The energy required to rotate it by is . Now the torque required to keep the magnet in this new position is
1
2
3
4
22
PYQ 2017
medium
physics ID: neet-ug-
If and be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip is given by :
1
2
3
4
23
PYQ 2017
medium
physics ID: neet-ug-
If and be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip is given by :
1
2
3
4
24
PYQ 2019
easy
physics ID: neet-ug-
At a point on the earth's surface the angle of dip. = +25?. Ata point Bon the earth's surface the angle of dip, = -25?. We can interpret that:
25
PYQ 2020
easy
physics ID: neet-ug-
An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A . The permeability of the material of the rod is :
1
2
3
4
26
PYQ 2021
medium
physics ID: neet-ug-
A uniform conducting wire of length 12a and resistance ‘R’ is wound up as a current-carrying coil in the shape of,
(i) an equilateral triangle of side ‘a’.
(ii) a square of side ‘a’.
The magnetic dipole moments of the coil in each case respectively are:
(i) an equilateral triangle of side ‘a’.
(ii) a square of side ‘a’.
The magnetic dipole moments of the coil in each case respectively are:
1
4Ia2 and 3Ia2
2
√3Ia2 and 3Ia2
3
3Ia2 and Ia2
4
3Ia2 and 4Ia2
27
PYQ 2021
medium
physics ID: neet-ug-
A capacitor of capacitance ‘C’, is connected across an ac source of voltage V, given by V=V0sinωt The displacement current between the plates of the capacitor, would then be given by
1
2
3
4
28
PYQ 2023
easy
physics ID: neet-ug-
A big circular coil of 1000 turns and average radius 10 m is rotating about its horizontal diameter at 2 rad s-1. If the vertical component of earth’s magnetic field at that place is 2 × 10-5 T and electrical resistance of the coil is 12.56 Ω, then the maximum induced current in the coil will be:
1
0.25 A
2
1.5 A
3
1 A
4
2 A
29
PYQ 2024
medium
physics ID: neet-ug-
The incorrect relation for a diamagnetic material (all the symbols carry their usual meaning and ε is a small positive number) is:
1
2
3
4
30
PYQ 2024
easy
physics ID: neet-ug-
The magnetic potential energy, when a magnetic bar of magnetic moment is placed perpendicular to the magnetic field , is:
1
2
Zero
3
4
31
PYQ 2024
medium
physics ID: neet-ug-
The magnetic moment and moment of inertia of a magnetic needle as shown are, respectively, and . If it completes 10 oscillations in 10 s, the magnitude of the magnetic field is:
1
0.4 T
2
4 T
3
0.4 mT
4
4 mT
About Magnetism And Matter - NEET-UG
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