NEET 2024 Past Year Paper with Detailed Solutions | NEET Past Year Papers PDF Download

 Page 1


 
 
  
Time : 3 hrs. 20 Min. M.M. : 720 
Important Instructions:  
1. The test is of 3 hours 20 minutes duration and the Test Booklet contains 200 multiple-choice questions (four 
options with a single correct answer) from Physics, Chemistry and Biology (Botany and Zoology). 50 questions 
in each subject are divided into two Sections (A and B) as per details given below: 
 (a) Section-A shall consist of 35 (Thirty-five) Questions in each subject (Question Nos-1 to 35, 51 to 85, 101 to 
135 and 151 to 185). All Questions are compulsory. 
 (b) Section-B shall consist of 15 (Fifteen) questions in each subject (Question Nos- 36 to 50, 86 to 100, 136 to 
150 and 186 to 200). In Section B, a candidate needs to attempt any 10 (Ten) questions out of 15 (Fifteen) 
in each subject. 
 Candidates are advised to read all 15 questions in each subject of Section B before they start attempting the 
question paper. In the event of a candidate attempting more than ten questions, the first ten questions answered 
by the candidate shall be evaluated.  
2. Each question carries 4 marks. For each correct response, the candidate will get 4 marks. For each incorrect 
response, one mark will be deducted from the total scores. The maximum marks are 720. 
3. Use Blue / Black Ball Point Pen only for writing particulars on this page / marking responses on Answer Sheet. 
4. Rough work is to be done in the space provided for this purpose in the Test Booklet only. 
5. On completion of the test, the candidate must hand over the Answer Sheet (ORIGINAL and OFFICE copy) to 
the Invigilator before leaving the Room / Hall. The candidates are allowed to take away this Test Booklet with 
them. 
6. The CODE for this Booklet is C1. Make sure that the CODE printed on the Original Copy of the Answer 
Sheet is the same as that on this Test Booklet. In case of discrepancy, the candidate should immediately report 
the matter to the Invigilator for replacement of both the Test Booklet and the Answer sheet. 
7. The candidates should ensure that the Answer Sheet is not folded. Do not make any stray marks on the Answer 
Sheet. Do not write your Roll No. anywhere else except in the specified space in the Test Booklet/Answer Sheet.  
8. Use of white fluid for correction is NOT permissible on the Answer Sheet. 
9. Each candidate must show on-demand his/her Admission Card to the Invigilator. 
10. No candidate, without special permission of the Centre Superintendent or Invigilator, would leave his/her seat. 
11. Use of Electronic/Manual Calculator is prohibited. 
12. The candidates are governed by all Rules and Regulations of the examination with regard to their conduct in the 
Examination Room / Hall. All cases of unfair means will be dealt with as per Rules and Regulations of this 
examination. 
13. No part of the Test Booklet and Answer Sheet shall be detached under any circumstances. 
14. The candidates will write the Correct Test Booklet Code as given in the Test Booklet / Answer Sheet in the 
Attendance Sheet. 
 
Answers & Solutions 
for 
 Re-Examination of NEET (UG)-2024 
 Re-Examination of NEET (UG)-2024 
Page 2


 
 
  
Time : 3 hrs. 20 Min. M.M. : 720 
Important Instructions:  
1. The test is of 3 hours 20 minutes duration and the Test Booklet contains 200 multiple-choice questions (four 
options with a single correct answer) from Physics, Chemistry and Biology (Botany and Zoology). 50 questions 
in each subject are divided into two Sections (A and B) as per details given below: 
 (a) Section-A shall consist of 35 (Thirty-five) Questions in each subject (Question Nos-1 to 35, 51 to 85, 101 to 
135 and 151 to 185). All Questions are compulsory. 
 (b) Section-B shall consist of 15 (Fifteen) questions in each subject (Question Nos- 36 to 50, 86 to 100, 136 to 
150 and 186 to 200). In Section B, a candidate needs to attempt any 10 (Ten) questions out of 15 (Fifteen) 
in each subject. 
 Candidates are advised to read all 15 questions in each subject of Section B before they start attempting the 
question paper. In the event of a candidate attempting more than ten questions, the first ten questions answered 
by the candidate shall be evaluated.  
2. Each question carries 4 marks. For each correct response, the candidate will get 4 marks. For each incorrect 
response, one mark will be deducted from the total scores. The maximum marks are 720. 
3. Use Blue / Black Ball Point Pen only for writing particulars on this page / marking responses on Answer Sheet. 
4. Rough work is to be done in the space provided for this purpose in the Test Booklet only. 
5. On completion of the test, the candidate must hand over the Answer Sheet (ORIGINAL and OFFICE copy) to 
the Invigilator before leaving the Room / Hall. The candidates are allowed to take away this Test Booklet with 
them. 
6. The CODE for this Booklet is C1. Make sure that the CODE printed on the Original Copy of the Answer 
Sheet is the same as that on this Test Booklet. In case of discrepancy, the candidate should immediately report 
the matter to the Invigilator for replacement of both the Test Booklet and the Answer sheet. 
7. The candidates should ensure that the Answer Sheet is not folded. Do not make any stray marks on the Answer 
Sheet. Do not write your Roll No. anywhere else except in the specified space in the Test Booklet/Answer Sheet.  
8. Use of white fluid for correction is NOT permissible on the Answer Sheet. 
9. Each candidate must show on-demand his/her Admission Card to the Invigilator. 
10. No candidate, without special permission of the Centre Superintendent or Invigilator, would leave his/her seat. 
11. Use of Electronic/Manual Calculator is prohibited. 
12. The candidates are governed by all Rules and Regulations of the examination with regard to their conduct in the 
Examination Room / Hall. All cases of unfair means will be dealt with as per Rules and Regulations of this 
examination. 
13. No part of the Test Booklet and Answer Sheet shall be detached under any circumstances. 
14. The candidates will write the Correct Test Booklet Code as given in the Test Booklet / Answer Sheet in the 
Attendance Sheet. 
 
Answers & Solutions 
for 
 Re-Examination of NEET (UG)-2024 
 Re-Examination of NEET (UG)-2024 2
PHYSICS 
 SECTION-A 
1. 
The magnetic potential energy, when a magnetic bar of magnetic moment m is placed perpendicular to the 
magnetic field B is 
(1) 
2
mB
- ( 2) Zero 
(3) –mB (4) mB 
Answer (2) 
Sol. Potential energy stored in external magnetic field is given by U m B = - ? 
  Angle between m and B is 90° 
 ? U = –mBcos 90° 
      = 0 
2. A bob is whirled in a horizontal circle by means of a string at an initial speed of 10 rpm. If the tension in the 
string is quadrupled while keeping the radius constant, the new speed is: 
(1) 20 rpm ( 2) 40 rpm 
(3) 5 rpm (4) 10 rpm 
Answer (1) 
Sol. In horizontal circular motion, 
 T = m?
2
r 
 For constant m and r, T ? ?
2
 
 T? = 4T (Given) 
 ? ?? = 2? 
 = 20 rpm 
3. A metal cube of side 5 cm is charged with 6 µC. The surface charge density on the cube is 
(1) 0.125 × 10
–3
 C m
–2 
( 2) 0. 25 × 10
–
3
 C m
–2
 
(3) 4 × 10
–3
 C m
–2 
(4) 0.4 × 10
–3
 C m
–2 
Answer (4) 
Sol. ?   In metal all the charge is present on surface. 
   Q = 6 ?C 
   Total surface area S = 6a
2 
   = 6 × (5 × 10
–2
)
2 
   = 6 × 25 × 10
–4
 
   = 150 × 10
–4
 m
2 
 Surface charge density ?=
Q
S
 
    
6
4
6 10
150 10
-
-
?
=
?
 
    = 0.4 × 10
–3
 C m
–2
 
 Re-Examination of NEET (UG)-2024 
Page 3


 
 
  
Time : 3 hrs. 20 Min. M.M. : 720 
Important Instructions:  
1. The test is of 3 hours 20 minutes duration and the Test Booklet contains 200 multiple-choice questions (four 
options with a single correct answer) from Physics, Chemistry and Biology (Botany and Zoology). 50 questions 
in each subject are divided into two Sections (A and B) as per details given below: 
 (a) Section-A shall consist of 35 (Thirty-five) Questions in each subject (Question Nos-1 to 35, 51 to 85, 101 to 
135 and 151 to 185). All Questions are compulsory. 
 (b) Section-B shall consist of 15 (Fifteen) questions in each subject (Question Nos- 36 to 50, 86 to 100, 136 to 
150 and 186 to 200). In Section B, a candidate needs to attempt any 10 (Ten) questions out of 15 (Fifteen) 
in each subject. 
 Candidates are advised to read all 15 questions in each subject of Section B before they start attempting the 
question paper. In the event of a candidate attempting more than ten questions, the first ten questions answered 
by the candidate shall be evaluated.  
2. Each question carries 4 marks. For each correct response, the candidate will get 4 marks. For each incorrect 
response, one mark will be deducted from the total scores. The maximum marks are 720. 
3. Use Blue / Black Ball Point Pen only for writing particulars on this page / marking responses on Answer Sheet. 
4. Rough work is to be done in the space provided for this purpose in the Test Booklet only. 
5. On completion of the test, the candidate must hand over the Answer Sheet (ORIGINAL and OFFICE copy) to 
the Invigilator before leaving the Room / Hall. The candidates are allowed to take away this Test Booklet with 
them. 
6. The CODE for this Booklet is C1. Make sure that the CODE printed on the Original Copy of the Answer 
Sheet is the same as that on this Test Booklet. In case of discrepancy, the candidate should immediately report 
the matter to the Invigilator for replacement of both the Test Booklet and the Answer sheet. 
7. The candidates should ensure that the Answer Sheet is not folded. Do not make any stray marks on the Answer 
Sheet. Do not write your Roll No. anywhere else except in the specified space in the Test Booklet/Answer Sheet.  
8. Use of white fluid for correction is NOT permissible on the Answer Sheet. 
9. Each candidate must show on-demand his/her Admission Card to the Invigilator. 
10. No candidate, without special permission of the Centre Superintendent or Invigilator, would leave his/her seat. 
11. Use of Electronic/Manual Calculator is prohibited. 
12. The candidates are governed by all Rules and Regulations of the examination with regard to their conduct in the 
Examination Room / Hall. All cases of unfair means will be dealt with as per Rules and Regulations of this 
examination. 
13. No part of the Test Booklet and Answer Sheet shall be detached under any circumstances. 
14. The candidates will write the Correct Test Booklet Code as given in the Test Booklet / Answer Sheet in the 
Attendance Sheet. 
 
Answers & Solutions 
for 
 Re-Examination of NEET (UG)-2024 
 Re-Examination of NEET (UG)-2024 2
PHYSICS 
 SECTION-A 
1. 
The magnetic potential energy, when a magnetic bar of magnetic moment m is placed perpendicular to the 
magnetic field B is 
(1) 
2
mB
- ( 2) Zero 
(3) –mB (4) mB 
Answer (2) 
Sol. Potential energy stored in external magnetic field is given by U m B = - ? 
  Angle between m and B is 90° 
 ? U = –mBcos 90° 
      = 0 
2. A bob is whirled in a horizontal circle by means of a string at an initial speed of 10 rpm. If the tension in the 
string is quadrupled while keeping the radius constant, the new speed is: 
(1) 20 rpm ( 2) 40 rpm 
(3) 5 rpm (4) 10 rpm 
Answer (1) 
Sol. In horizontal circular motion, 
 T = m?
2
r 
 For constant m and r, T ? ?
2
 
 T? = 4T (Given) 
 ? ?? = 2? 
 = 20 rpm 
3. A metal cube of side 5 cm is charged with 6 µC. The surface charge density on the cube is 
(1) 0.125 × 10
–3
 C m
–2 
( 2) 0. 25 × 10
–
3
 C m
–2
 
(3) 4 × 10
–3
 C m
–2 
(4) 0.4 × 10
–3
 C m
–2 
Answer (4) 
Sol. ?   In metal all the charge is present on surface. 
   Q = 6 ?C 
   Total surface area S = 6a
2 
   = 6 × (5 × 10
–2
)
2 
   = 6 × 25 × 10
–4
 
   = 150 × 10
–4
 m
2 
 Surface charge density ?=
Q
S
 
    
6
4
6 10
150 10
-
-
?
=
?
 
    = 0.4 × 10
–3
 C m
–2
 
 Re-Examination of NEET (UG)-2024 3
4. The incorrect relation for a diamagnetic material (all the symbols carry their usual meaning and ? is a small 
positive number) is 
(1) ? < ?0 ( 2) 0 ? ? r < 1 
(3) –1 ? ? < 0 (4) 1 < ? r < 1 + ? 
Answer (4) 
Sol. For diamagnetic material, 
  0 ? ? r < 1 
 ? = ? r – 1 
 ? –1 ? ? < 0 
 
0
?
?=
?
r
 
 
0
( 1 ) ? ? ? ? ? ?
r
 
5. An ideal fluid is flowing in a non-uniform cross-sectional tube XY (as shown in the figure) from end X to end 
Y. If K1 and K2 are the kinetic energy per unit volume of the fluid at X and Y respectively, then the correct 
option is :  
 
(1) K1 = K2 ( 2) 2K1 = K2 
(3) K1 > K2 (4) K1 < K2 
Answer (3) 
Sol. According to Bernoulli's principle, 
Kinetic energy per unit volume + Potential energy per unit volume + Pressure = Constant 
2
1
2
? + ? + = V gh P constant 
Apply Bernoulli's principle at point X and Y,  
P + K1 + ?g (0) = P + K2 + ?g (h) 
K1 = K2 + ?gh   
K1 > K2 
6. The escape velocity for earth is v. A planet having 9 times mass that of earth and radius, 16 times that of 
earth, has the escape velocity of: 
(1) 
3
v
 ( 2) 
2
3
v
 
(3) 
3
4
v
 (4) 
9
4
v
 
Answer (3) 
Sol. Escape velocity of object from planet is given by 
 Re-Examination of NEET (UG)-2024 
Page 4


 
 
  
Time : 3 hrs. 20 Min. M.M. : 720 
Important Instructions:  
1. The test is of 3 hours 20 minutes duration and the Test Booklet contains 200 multiple-choice questions (four 
options with a single correct answer) from Physics, Chemistry and Biology (Botany and Zoology). 50 questions 
in each subject are divided into two Sections (A and B) as per details given below: 
 (a) Section-A shall consist of 35 (Thirty-five) Questions in each subject (Question Nos-1 to 35, 51 to 85, 101 to 
135 and 151 to 185). All Questions are compulsory. 
 (b) Section-B shall consist of 15 (Fifteen) questions in each subject (Question Nos- 36 to 50, 86 to 100, 136 to 
150 and 186 to 200). In Section B, a candidate needs to attempt any 10 (Ten) questions out of 15 (Fifteen) 
in each subject. 
 Candidates are advised to read all 15 questions in each subject of Section B before they start attempting the 
question paper. In the event of a candidate attempting more than ten questions, the first ten questions answered 
by the candidate shall be evaluated.  
2. Each question carries 4 marks. For each correct response, the candidate will get 4 marks. For each incorrect 
response, one mark will be deducted from the total scores. The maximum marks are 720. 
3. Use Blue / Black Ball Point Pen only for writing particulars on this page / marking responses on Answer Sheet. 
4. Rough work is to be done in the space provided for this purpose in the Test Booklet only. 
5. On completion of the test, the candidate must hand over the Answer Sheet (ORIGINAL and OFFICE copy) to 
the Invigilator before leaving the Room / Hall. The candidates are allowed to take away this Test Booklet with 
them. 
6. The CODE for this Booklet is C1. Make sure that the CODE printed on the Original Copy of the Answer 
Sheet is the same as that on this Test Booklet. In case of discrepancy, the candidate should immediately report 
the matter to the Invigilator for replacement of both the Test Booklet and the Answer sheet. 
7. The candidates should ensure that the Answer Sheet is not folded. Do not make any stray marks on the Answer 
Sheet. Do not write your Roll No. anywhere else except in the specified space in the Test Booklet/Answer Sheet.  
8. Use of white fluid for correction is NOT permissible on the Answer Sheet. 
9. Each candidate must show on-demand his/her Admission Card to the Invigilator. 
10. No candidate, without special permission of the Centre Superintendent or Invigilator, would leave his/her seat. 
11. Use of Electronic/Manual Calculator is prohibited. 
12. The candidates are governed by all Rules and Regulations of the examination with regard to their conduct in the 
Examination Room / Hall. All cases of unfair means will be dealt with as per Rules and Regulations of this 
examination. 
13. No part of the Test Booklet and Answer Sheet shall be detached under any circumstances. 
14. The candidates will write the Correct Test Booklet Code as given in the Test Booklet / Answer Sheet in the 
Attendance Sheet. 
 
Answers & Solutions 
for 
 Re-Examination of NEET (UG)-2024 
 Re-Examination of NEET (UG)-2024 2
PHYSICS 
 SECTION-A 
1. 
The magnetic potential energy, when a magnetic bar of magnetic moment m is placed perpendicular to the 
magnetic field B is 
(1) 
2
mB
- ( 2) Zero 
(3) –mB (4) mB 
Answer (2) 
Sol. Potential energy stored in external magnetic field is given by U m B = - ? 
  Angle between m and B is 90° 
 ? U = –mBcos 90° 
      = 0 
2. A bob is whirled in a horizontal circle by means of a string at an initial speed of 10 rpm. If the tension in the 
string is quadrupled while keeping the radius constant, the new speed is: 
(1) 20 rpm ( 2) 40 rpm 
(3) 5 rpm (4) 10 rpm 
Answer (1) 
Sol. In horizontal circular motion, 
 T = m?
2
r 
 For constant m and r, T ? ?
2
 
 T? = 4T (Given) 
 ? ?? = 2? 
 = 20 rpm 
3. A metal cube of side 5 cm is charged with 6 µC. The surface charge density on the cube is 
(1) 0.125 × 10
–3
 C m
–2 
( 2) 0. 25 × 10
–
3
 C m
–2
 
(3) 4 × 10
–3
 C m
–2 
(4) 0.4 × 10
–3
 C m
–2 
Answer (4) 
Sol. ?   In metal all the charge is present on surface. 
   Q = 6 ?C 
   Total surface area S = 6a
2 
   = 6 × (5 × 10
–2
)
2 
   = 6 × 25 × 10
–4
 
   = 150 × 10
–4
 m
2 
 Surface charge density ?=
Q
S
 
    
6
4
6 10
150 10
-
-
?
=
?
 
    = 0.4 × 10
–3
 C m
–2
 
 Re-Examination of NEET (UG)-2024 3
4. The incorrect relation for a diamagnetic material (all the symbols carry their usual meaning and ? is a small 
positive number) is 
(1) ? < ?0 ( 2) 0 ? ? r < 1 
(3) –1 ? ? < 0 (4) 1 < ? r < 1 + ? 
Answer (4) 
Sol. For diamagnetic material, 
  0 ? ? r < 1 
 ? = ? r – 1 
 ? –1 ? ? < 0 
 
0
?
?=
?
r
 
 
0
( 1 ) ? ? ? ? ? ?
r
 
5. An ideal fluid is flowing in a non-uniform cross-sectional tube XY (as shown in the figure) from end X to end 
Y. If K1 and K2 are the kinetic energy per unit volume of the fluid at X and Y respectively, then the correct 
option is :  
 
(1) K1 = K2 ( 2) 2K1 = K2 
(3) K1 > K2 (4) K1 < K2 
Answer (3) 
Sol. According to Bernoulli's principle, 
Kinetic energy per unit volume + Potential energy per unit volume + Pressure = Constant 
2
1
2
? + ? + = V gh P constant 
Apply Bernoulli's principle at point X and Y,  
P + K1 + ?g (0) = P + K2 + ?g (h) 
K1 = K2 + ?gh   
K1 > K2 
6. The escape velocity for earth is v. A planet having 9 times mass that of earth and radius, 16 times that of 
earth, has the escape velocity of: 
(1) 
3
v
 ( 2) 
2
3
v
 
(3) 
3
4
v
 (4) 
9
4
v
 
Answer (3) 
Sol. Escape velocity of object from planet is given by 
 Re-Examination of NEET (UG)-2024 4
( )
2
p
e
p
p
GM
v
R
= 
? ( )
p
e
p
p
M
v
R
? 
Now, M p = 9M e and R p = 16R e   (given) 
( )
( )
9 93
16 16 4
e
pp
e e e
e p e e e
e
v
M
R M R
v R M R M
= ? = ? = = 
? ( )
3
4
e
p
vv = 
7. 
An electron and an alpha particle are accelerated by the same potential difference. Let ? e and ?? denote the 
de-Broglie wavelengths of the electron and the alpha particle, respectively, then: 
(1) ? e > ?? ( 2) ? e = 4?? 
(3) ? e = ?? (4) ? e < ?? 
Answer (1) 
Sol. de-Broglie wavelength is given by 
  
2
hh
p
mqV
? = = 
  For same potential difference 
  
1
mq
?? 
  
ee
e
mq
mq
?
??
?
=
?
 
 
e
mm
?
??? 
  ? e > ?? 
8. 
An object moving along horizontal x-direction with kinetic energy 10 J is displaced through 
( )
ˆ
3 m xi = by the 
force 
( )
ˆˆ
2 3 N F i j = - + . The kinetic energy of the object at the end of the displacement x is 
(1) 10 J ( 2) 16 J 
(3) 4 J (4) 6 J 
Answer (3) 
Sol. Work energy theorem, 
 Wall = ? K.E (Wall = work done by all forces) 
 ? K f – K i =  Fx ?? 
 ? K f – 10 = 
( ) ( )
ˆ ˆ ˆ
2 3 . 3 i j i -+ 
 K f – 10 = –6 
 K f = 4 J 
 Re-Examination of NEET (UG)-2024 
Page 5


 
 
  
Time : 3 hrs. 20 Min. M.M. : 720 
Important Instructions:  
1. The test is of 3 hours 20 minutes duration and the Test Booklet contains 200 multiple-choice questions (four 
options with a single correct answer) from Physics, Chemistry and Biology (Botany and Zoology). 50 questions 
in each subject are divided into two Sections (A and B) as per details given below: 
 (a) Section-A shall consist of 35 (Thirty-five) Questions in each subject (Question Nos-1 to 35, 51 to 85, 101 to 
135 and 151 to 185). All Questions are compulsory. 
 (b) Section-B shall consist of 15 (Fifteen) questions in each subject (Question Nos- 36 to 50, 86 to 100, 136 to 
150 and 186 to 200). In Section B, a candidate needs to attempt any 10 (Ten) questions out of 15 (Fifteen) 
in each subject. 
 Candidates are advised to read all 15 questions in each subject of Section B before they start attempting the 
question paper. In the event of a candidate attempting more than ten questions, the first ten questions answered 
by the candidate shall be evaluated.  
2. Each question carries 4 marks. For each correct response, the candidate will get 4 marks. For each incorrect 
response, one mark will be deducted from the total scores. The maximum marks are 720. 
3. Use Blue / Black Ball Point Pen only for writing particulars on this page / marking responses on Answer Sheet. 
4. Rough work is to be done in the space provided for this purpose in the Test Booklet only. 
5. On completion of the test, the candidate must hand over the Answer Sheet (ORIGINAL and OFFICE copy) to 
the Invigilator before leaving the Room / Hall. The candidates are allowed to take away this Test Booklet with 
them. 
6. The CODE for this Booklet is C1. Make sure that the CODE printed on the Original Copy of the Answer 
Sheet is the same as that on this Test Booklet. In case of discrepancy, the candidate should immediately report 
the matter to the Invigilator for replacement of both the Test Booklet and the Answer sheet. 
7. The candidates should ensure that the Answer Sheet is not folded. Do not make any stray marks on the Answer 
Sheet. Do not write your Roll No. anywhere else except in the specified space in the Test Booklet/Answer Sheet.  
8. Use of white fluid for correction is NOT permissible on the Answer Sheet. 
9. Each candidate must show on-demand his/her Admission Card to the Invigilator. 
10. No candidate, without special permission of the Centre Superintendent or Invigilator, would leave his/her seat. 
11. Use of Electronic/Manual Calculator is prohibited. 
12. The candidates are governed by all Rules and Regulations of the examination with regard to their conduct in the 
Examination Room / Hall. All cases of unfair means will be dealt with as per Rules and Regulations of this 
examination. 
13. No part of the Test Booklet and Answer Sheet shall be detached under any circumstances. 
14. The candidates will write the Correct Test Booklet Code as given in the Test Booklet / Answer Sheet in the 
Attendance Sheet. 
 
Answers & Solutions 
for 
 Re-Examination of NEET (UG)-2024 
 Re-Examination of NEET (UG)-2024 2
PHYSICS 
 SECTION-A 
1. 
The magnetic potential energy, when a magnetic bar of magnetic moment m is placed perpendicular to the 
magnetic field B is 
(1) 
2
mB
- ( 2) Zero 
(3) –mB (4) mB 
Answer (2) 
Sol. Potential energy stored in external magnetic field is given by U m B = - ? 
  Angle between m and B is 90° 
 ? U = –mBcos 90° 
      = 0 
2. A bob is whirled in a horizontal circle by means of a string at an initial speed of 10 rpm. If the tension in the 
string is quadrupled while keeping the radius constant, the new speed is: 
(1) 20 rpm ( 2) 40 rpm 
(3) 5 rpm (4) 10 rpm 
Answer (1) 
Sol. In horizontal circular motion, 
 T = m?
2
r 
 For constant m and r, T ? ?
2
 
 T? = 4T (Given) 
 ? ?? = 2? 
 = 20 rpm 
3. A metal cube of side 5 cm is charged with 6 µC. The surface charge density on the cube is 
(1) 0.125 × 10
–3
 C m
–2 
( 2) 0. 25 × 10
–
3
 C m
–2
 
(3) 4 × 10
–3
 C m
–2 
(4) 0.4 × 10
–3
 C m
–2 
Answer (4) 
Sol. ?   In metal all the charge is present on surface. 
   Q = 6 ?C 
   Total surface area S = 6a
2 
   = 6 × (5 × 10
–2
)
2 
   = 6 × 25 × 10
–4
 
   = 150 × 10
–4
 m
2 
 Surface charge density ?=
Q
S
 
    
6
4
6 10
150 10
-
-
?
=
?
 
    = 0.4 × 10
–3
 C m
–2
 
 Re-Examination of NEET (UG)-2024 3
4. The incorrect relation for a diamagnetic material (all the symbols carry their usual meaning and ? is a small 
positive number) is 
(1) ? < ?0 ( 2) 0 ? ? r < 1 
(3) –1 ? ? < 0 (4) 1 < ? r < 1 + ? 
Answer (4) 
Sol. For diamagnetic material, 
  0 ? ? r < 1 
 ? = ? r – 1 
 ? –1 ? ? < 0 
 
0
?
?=
?
r
 
 
0
( 1 ) ? ? ? ? ? ?
r
 
5. An ideal fluid is flowing in a non-uniform cross-sectional tube XY (as shown in the figure) from end X to end 
Y. If K1 and K2 are the kinetic energy per unit volume of the fluid at X and Y respectively, then the correct 
option is :  
 
(1) K1 = K2 ( 2) 2K1 = K2 
(3) K1 > K2 (4) K1 < K2 
Answer (3) 
Sol. According to Bernoulli's principle, 
Kinetic energy per unit volume + Potential energy per unit volume + Pressure = Constant 
2
1
2
? + ? + = V gh P constant 
Apply Bernoulli's principle at point X and Y,  
P + K1 + ?g (0) = P + K2 + ?g (h) 
K1 = K2 + ?gh   
K1 > K2 
6. The escape velocity for earth is v. A planet having 9 times mass that of earth and radius, 16 times that of 
earth, has the escape velocity of: 
(1) 
3
v
 ( 2) 
2
3
v
 
(3) 
3
4
v
 (4) 
9
4
v
 
Answer (3) 
Sol. Escape velocity of object from planet is given by 
 Re-Examination of NEET (UG)-2024 4
( )
2
p
e
p
p
GM
v
R
= 
? ( )
p
e
p
p
M
v
R
? 
Now, M p = 9M e and R p = 16R e   (given) 
( )
( )
9 93
16 16 4
e
pp
e e e
e p e e e
e
v
M
R M R
v R M R M
= ? = ? = = 
? ( )
3
4
e
p
vv = 
7. 
An electron and an alpha particle are accelerated by the same potential difference. Let ? e and ?? denote the 
de-Broglie wavelengths of the electron and the alpha particle, respectively, then: 
(1) ? e > ?? ( 2) ? e = 4?? 
(3) ? e = ?? (4) ? e < ?? 
Answer (1) 
Sol. de-Broglie wavelength is given by 
  
2
hh
p
mqV
? = = 
  For same potential difference 
  
1
mq
?? 
  
ee
e
mq
mq
?
??
?
=
?
 
 
e
mm
?
??? 
  ? e > ?? 
8. 
An object moving along horizontal x-direction with kinetic energy 10 J is displaced through 
( )
ˆ
3 m xi = by the 
force 
( )
ˆˆ
2 3 N F i j = - + . The kinetic energy of the object at the end of the displacement x is 
(1) 10 J ( 2) 16 J 
(3) 4 J (4) 6 J 
Answer (3) 
Sol. Work energy theorem, 
 Wall = ? K.E (Wall = work done by all forces) 
 ? K f – K i =  Fx ?? 
 ? K f – 10 = 
( ) ( )
ˆ ˆ ˆ
2 3 . 3 i j i -+ 
 K f – 10 = –6 
 K f = 4 J 
 Re-Examination of NEET (UG)-2024 5
9. 
An object falls from a height of 10 m above the ground. After striking the ground it loses 50% of its kinetic 
energy. The height upto which the object can rebounce from the ground is: 
(1) 7.5 m ( 2) 10 m 
(3) 2.5 m (4) 5 m 
Answer (4) 
Sol. K.E. just before striking the ground K1 = mgh1 = mg(10) 
 K.E. just after striking the ground 
1
1 1 1 2
50 50
–
100 100 2
K
K K K K = = = = 
 Now, K2 = mgh2 
 
1
2
2
K
mgh ?= 
 
22
(10)
5m
2
? = ? =
mg
mgh h 
10. 
In the circuit shown below, the inductance L is connected to an ac source. The current flowing in the circuit is 
I = I0sin?t. The voltage drop (V L) across L is  
 
(1) ?L I0sin?t ( 2) 
0
sin
I
t
L
?
?
 
(3) 
0
cos
I
t
L
?
?
 (4) ?L I0cos?t 
Answer (4) 
Sol. V L leads current I by 
2
?
 
 
0
sin
2
L
V V t
? ??
? = ? +
??
??
       ( ? I = I0sin?t) 
 V0 = I0X L 
 ? V L = I0X Lcos(?t) = I0?Lcos(?t) 
11. 
A 12 pF capacitor is connected to a 50 V battery, the electrostatic energy stored in the capacitor in nJ is 
(1) 15 
( 2) 7.5 
(3) 0.3 
(4) 150 
Answer (1) 
 Re-Examination of NEET (UG)-2024