Magnetism and Matter: JEE Mains Previous Year Questions (2021-2024) | Physics for JEE Main & Advanced PDF Download

 Page 1


 
2024 
 
Q1 - 2024 (30 Jan Shift 1) 
The horizontal component of earth's magnetic field at a place is 3.5×10
-5
?? . A very long 
straight conductor carrying current of  2?? in the direction from South east to North West 
is placed. The force per unit length experienced by the conductor is....... ×10
-6
N/m. 
Q2 - 2024 (30 Jan Shift 1) 
A ceiling fan having 3 blades of length 80cm each is rotating with an angular velocity of 
1200rpm. The magnetic field of earth in that region is 0.5G and angle of dip is 30
°
. The 
emf induced across the blades is ?? ×10
-5
V. The value of N is 
Answer Key 
Q1 (35) 
Q2 (32) 
Solutions 
Q1 
?? ?? = 3.5×10
-5
T 
?? =??l?? sin? ?? ,i= 2A 
?? l
=???? sin? ?? = 2×3.5×10
-5
×
1
 2
 
= 35×10
-6
N/m 
Q2 
?? ?? =?? sin? 30 =
1
4
×10
-4
 
Page 2


 
2024 
 
Q1 - 2024 (30 Jan Shift 1) 
The horizontal component of earth's magnetic field at a place is 3.5×10
-5
?? . A very long 
straight conductor carrying current of  2?? in the direction from South east to North West 
is placed. The force per unit length experienced by the conductor is....... ×10
-6
N/m. 
Q2 - 2024 (30 Jan Shift 1) 
A ceiling fan having 3 blades of length 80cm each is rotating with an angular velocity of 
1200rpm. The magnetic field of earth in that region is 0.5G and angle of dip is 30
°
. The 
emf induced across the blades is ?? ×10
-5
V. The value of N is 
Answer Key 
Q1 (35) 
Q2 (32) 
Solutions 
Q1 
?? ?? = 3.5×10
-5
T 
?? =??l?? sin? ?? ,i= 2A 
?? l
=???? sin? ?? = 2×3.5×10
-5
×
1
 2
 
= 35×10
-6
N/m 
Q2 
?? ?? =?? sin? 30 =
1
4
×10
-4
 
?? = 2?? ×?? =
2?? 60
×1200rad/s 
?? =
1
2
?? ?? ?? l
2
 
= 32?? ×10
-5
V 
Page 3


 
2024 
 
Q1 - 2024 (30 Jan Shift 1) 
The horizontal component of earth's magnetic field at a place is 3.5×10
-5
?? . A very long 
straight conductor carrying current of  2?? in the direction from South east to North West 
is placed. The force per unit length experienced by the conductor is....... ×10
-6
N/m. 
Q2 - 2024 (30 Jan Shift 1) 
A ceiling fan having 3 blades of length 80cm each is rotating with an angular velocity of 
1200rpm. The magnetic field of earth in that region is 0.5G and angle of dip is 30
°
. The 
emf induced across the blades is ?? ×10
-5
V. The value of N is 
Answer Key 
Q1 (35) 
Q2 (32) 
Solutions 
Q1 
?? ?? = 3.5×10
-5
T 
?? =??l?? sin? ?? ,i= 2A 
?? l
=???? sin? ?? = 2×3.5×10
-5
×
1
 2
 
= 35×10
-6
N/m 
Q2 
?? ?? =?? sin? 30 =
1
4
×10
-4
 
?? = 2?? ×?? =
2?? 60
×1200rad/s 
?? =
1
2
?? ?? ?? l
2
 
= 32?? ×10
-5
V 
MCQ (Single Correct Answer) 
 
 
 
Q.1. 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 opposite to the magnetizing 
field. 
In the light of given statements, choose the correct answer 
from the options given below. 
 
 
JEE Main 2023 (Online) 12th April Morning Shift 
 
Q.2. Given below are two statements: one is labelled as 
Assertion A and the other is labelled as Reason R 
Page 4


 
2024 
 
Q1 - 2024 (30 Jan Shift 1) 
The horizontal component of earth's magnetic field at a place is 3.5×10
-5
?? . A very long 
straight conductor carrying current of  2?? in the direction from South east to North West 
is placed. The force per unit length experienced by the conductor is....... ×10
-6
N/m. 
Q2 - 2024 (30 Jan Shift 1) 
A ceiling fan having 3 blades of length 80cm each is rotating with an angular velocity of 
1200rpm. The magnetic field of earth in that region is 0.5G and angle of dip is 30
°
. The 
emf induced across the blades is ?? ×10
-5
V. The value of N is 
Answer Key 
Q1 (35) 
Q2 (32) 
Solutions 
Q1 
?? ?? = 3.5×10
-5
T 
?? =??l?? sin? ?? ,i= 2A 
?? l
=???? sin? ?? = 2×3.5×10
-5
×
1
 2
 
= 35×10
-6
N/m 
Q2 
?? ?? =?? sin? 30 =
1
4
×10
-4
 
?? = 2?? ×?? =
2?? 60
×1200rad/s 
?? =
1
2
?? ?? ?? l
2
 
= 32?? ×10
-5
V 
MCQ (Single Correct Answer) 
 
 
 
Q.1. 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 opposite to the magnetizing 
field. 
In the light of given statements, choose the correct answer 
from the options given below. 
 
 
JEE Main 2023 (Online) 12th April Morning Shift 
 
Q.2. 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 more time to come down compared to a 
non-magnetic bar with same geometry and mass. 
Reason R: For the magnetic bar, Eddy currents are produced in 
the metallic pipe which oppose the motion of the magnetic bar. 
In the light of the above statements, choose the correct answer 
from the options given below 
 
 
JEE Main 2023 (Online) 11th April Evening Shift 
 
Q.3. The free space inside a current carrying toroid is filled with 
a material of susceptibility 2 × 1 0 - 2. The percentage increase in 
the value of magnetic field inside the toroid will be 
 
Page 5


 
2024 
 
Q1 - 2024 (30 Jan Shift 1) 
The horizontal component of earth's magnetic field at a place is 3.5×10
-5
?? . A very long 
straight conductor carrying current of  2?? in the direction from South east to North West 
is placed. The force per unit length experienced by the conductor is....... ×10
-6
N/m. 
Q2 - 2024 (30 Jan Shift 1) 
A ceiling fan having 3 blades of length 80cm each is rotating with an angular velocity of 
1200rpm. The magnetic field of earth in that region is 0.5G and angle of dip is 30
°
. The 
emf induced across the blades is ?? ×10
-5
V. The value of N is 
Answer Key 
Q1 (35) 
Q2 (32) 
Solutions 
Q1 
?? ?? = 3.5×10
-5
T 
?? =??l?? sin? ?? ,i= 2A 
?? l
=???? sin? ?? = 2×3.5×10
-5
×
1
 2
 
= 35×10
-6
N/m 
Q2 
?? ?? =?? sin? 30 =
1
4
×10
-4
 
?? = 2?? ×?? =
2?? 60
×1200rad/s 
?? =
1
2
?? ?? ?? l
2
 
= 32?? ×10
-5
V 
MCQ (Single Correct Answer) 
 
 
 
Q.1. 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 opposite to the magnetizing 
field. 
In the light of given statements, choose the correct answer 
from the options given below. 
 
 
JEE Main 2023 (Online) 12th April Morning Shift 
 
Q.2. 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 more time to come down compared to a 
non-magnetic bar with same geometry and mass. 
Reason R: For the magnetic bar, Eddy currents are produced in 
the metallic pipe which oppose the motion of the magnetic bar. 
In the light of the above statements, choose the correct answer 
from the options given below 
 
 
JEE Main 2023 (Online) 11th April Evening Shift 
 
Q.3. The free space inside a current carrying toroid is filled with 
a material of susceptibility 2 × 1 0 - 2. The percentage increase in 
the value of magnetic field inside the toroid will be 
 
 
JEE Main 2023 (Online) 11th April Morning Shift 
 
Q.4. A bar magnet is released from rest along the axis of a very 
long vertical copper tube. After some time the magnet will 
 
JEE Main 2023 (Online) 10th April Evening Shift 
 
Q.5. Given below are two statements: 
Statement I : For diamagnetic substance, , 
where x is the magnetic susceptibility. 
Statement II : Diamagnetic substances when placed in an 
external magnetic field, tend to move from stronger to weaker 
part of the field.