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Magnetic Effects of Current — JEE Main Physics MCQs with Solutions
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Sample questions with solutions
Q1 — medium · theory
A metal wire of uniform mass density having 24-5. Match list-I with list-II:
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q2 — medium · theory
enough to carry it to infinity. The time taken
A. 20-4. orbit around the earth. Its radius is roughly ✓ Correct
B. 2Re h 3/2 rockets attached to it, its speed is
C. 2g 1 Re 2
D. g 1 Re 1
Q3 — medium · theory
(4) 24-2. (1) ANSWER KEY 24-4. (4) 24-5. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q4 — medium · theory
(3) 22-2. (1) 24-13. (1) 22-4. (2) 21-1. (2)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q5 — medium · theory
(1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q6 — medium · theory
T2 R3
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q7 — medium · theory
of removed portion will be m'/8
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q8 — medium · theory
24-6. [JEE-Main_050424_S1]
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q9 — medium · theory
ve in vertically upward direction from the
A. 1 2 (2) 1 2 ✓ Correct
B. (4) 1 2
C. 3Gm 2 R g
D. 1 3Gm 3Gm The angular momentum of a planet of mass
Q10 — medium · theory
(3) 23-3. (4) 24-8. (4) 23-5. (4) 23-6. (3)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q11 — medium · theory
(4) 21-3. (3) 23-4. (4) 21-5. (4) 21-6. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q12 — medium · numerical
F= = × ×.× ×.×
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q13 — medium · theory
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q14 — medium · theory
F1 1 50 9 50
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q15 — medium · theory
length L and mass M is bent to form a
A. 2 L2 (2) 0 ✓ Correct
B. GmM 2 (4) 2GmM
C. 10 (2) 10 (1) (A) - II, (B) - I, (C) - IV, (D) – III
D. (A) - III, (B) - IV, (C) - I, (D) - II
Q16 — medium · theory
The weight of a body at the surface of earth is of side d (as shown in figure). A fifth sphere of
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q17 — medium · numerical
h = 318.5 ≈ T r
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q18 — medium · numerical
qx = 4a2
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q19 — medium · theory
A body of mass m is projected with velocity
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q20 — medium · theory
(1) 23-7. 16 21-4. (4) 21-10. 3 20-5. 16
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q21 — medium · theory
v (R h) 2 .
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q22 — medium · theory
g g
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q23 — medium · numerical
Fnet = F1 + F2 cos 45° + F3 cos 45°
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q24 — medium · theory
C mv2
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q25 — medium · theory
18 N. The weight of the body at an altitude of mass M is situated at the centre of square.
A. 9.8 N (2) 4.9 N ✓ Correct
B. 19.6 N (4) 8 N
C. Zero (2) 300 N Gm (4 2M
D. 100 N (4) 200 N (1) 2)m 4
Q26 — medium · theory
d 2d d
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q27 — medium · theory
2GM dt ( Re r )dr
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q28 — medium · theory
For equilibrium along the plane
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q29 — medium · numerical
From symmetry = 6 0 charge r Q r Q r
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q30 — medium · theory
(3) 24-7. (2) 24-9. (4) 24-10. (2)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D