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Rotational Motion — JEE Main Physics MCQs with Solutions
Free JEE Main Physics Rotational Motion MCQs with step-by-step solutions. Practise online on Prepizo — no login needed.
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Sample questions with solutions
Q1 — medium · theory
Ratio of radius of gyration of a hollow sphere v2 3 v2
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q2 — medium · theory
Solid spherical ball is rolling on a frictionless
A. (2) ✓ Correct
B. (4)
C. 34 (2) 17 Match List-I with List-II
D. 67 (4) 51 [JEE Main_280622_{S1}]
Q3 — medium · theory
(3) 24-2. (1) ANSWER KEY 22-1. (2) RIGID BODY DYNAMIC
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q4 — medium · numerical
Isphere = MR = Mk 22-1. Ktotal = Krotational + KTranslational
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q5 — medium · theory
Ring I1 MR2 about diameter
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q6 — medium · theory
to that of a solid cylinder of equal mass, for
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q7 — medium · theory
about their respective axes perpendicular to
A. LA and LB are both constant in magnitude They are rotating with angular speeds, 1 and ✓ Correct
B. LB is constant in direction with varying face to face with their axes of rotation coaxial.
C. LB is constant, both in magnitude and process is given by : [JEE MAIN_270821_{S2}]
D. LA is constant, both in magnitude and )
Q8 — medium · theory
(3) 20-3. (4) 21-1. (3) 21-7. (3) 21-3. (2)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q9 — medium · theory
22-2.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q10 — medium · theory
A disc of radius R and mass M is rolling
A. A-II, B-I, C-IV, D-III ✓ Correct
B. A-I, B-II, C-IV, D-III
C. A-II, B-I, C-III, D-IV
D. A-I, B-II, C-III, D-IV
Q11 — medium · theory
A 34 m long ladder weighing 10 kg leans 21-2. RIGID BODY DYNAMIC
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q12 — medium · theory
A cord is wound round the circumference of
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q13 — medium · theory
A uniform rod of length ‘l’ is pivoted at one of 24-7.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q14 — medium · theory
(3) 22-4. (4) 21-2. (3)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q15 — medium · theory
1 1 K total 1 cm2 1 mVc2m
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q16 — medium · numerical
21-3. mgh = 1 2 1 mv2
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q17 — medium · theory
A solid cylinder and a solid sphere, having is I. A weight mg is attached to the cord at the
A. 5 (2) 4 (3) 2 gh (4) 2 gh ✓ Correct
B. 3 (4) 14 A mass M hangs on a massless rod of length
C. I1 + I3 < I2 + I4 (2) I1 + I2 = I3 + 52I4
D. I1 = I2 = I3 > I4 (4) I1 = I2 = I3 < I4
Q18 — medium · theory
(4) 21-5. (3) 24-3. (3) 22-2. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q19 — medium · theory
3 23-5. 75 24-7. 13 24-8. 7 24-9. 3
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q20 — medium · theory
2gH
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q21 — medium · theory
We know
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q22 — medium · theory
1
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q23 — medium · theory
Given
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q24 — medium · theory
M(0 ˆi 0ˆj) M(3 ˆi) M(3 ˆj)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q25 — medium · theory
Consider a uniform wire of mass M and length )
A. 4 2 (2) 5 2 ✓ Correct
B. 2 (4) 2 2
C. 3 m2 RIGID BODY DYNAMIC
D. 4 m2
Q26 — medium · theory
x 2.4 meter is bent to make an equilateral
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q27 — medium · theory
2 24-6. 100 21-6. (3) 20-1. (4)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q28 — medium · theory
L L 1 x
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q29 — medium · numerical
= () I = ma + maa + m(√2a)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q30 — medium · theory
Pi Pf
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D