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MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
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MCQ Questions for CBSE Class 1 with Answers
Quiz
CBSE
/
Class 11
/
Physics
/
System of Particles and Rotational Motion
1.
A body of M.I. 3 kg m² rotating with an angular velocity 2 rad/s has the same K.E. as a mass of 12 kg moving with a velocity of
1 m/s
2 m/s
4 m/s
8 m/s
2.
A particle performing uniform circular motion has angular momentum L. If its angular frequency is doubled and its kinetic energy halved, then the new angular momentum is
L/2
L/4
2 L
4 L
3.
A thin uniform, circular ring is rolling down an inclined plane of inclination 300 without slipping. Its linear acceleration along the inclined plane will be
g/2
g/3
g/4
2g/3
4.
Moment of inertia depends on
Distribution of particles
Mass
Position of axis of rotation
All of these
5.
Calculate the M.I. of a thin uniform ring about an axis tangent to the ring and in a plane of the ring, if its M.I. about an axis passing through the centre and perpendicular to plane is 4 kg m².
12 kg m²
3 kg m²
6 kg m²
9 kg m²
6.
If a body is rotating about an axis, passing through its centre of mass then its angular momentum is directed along its
Radius
Tangent
Circumference
Axis of rotation
7.
A solid cylinder of mass 20 kg, has length 1 metre and radius 0.5m. then its momentum of inertia in kg m² about its geometrical axis is
2.5
5
1.5
3
8.
A particle moves on a circular path with decreasing speed. Choose the correct statement.
Angular momentum remains constant.
Acceleration is towards the centre.
Particle moves on a spiral path with decreasing radius.
The direction of angular momentum remains constant.
9.
The M.I. of uniform circular disc about a diameter is I. its M.I. about an axis perpendicular to its plane passing through a point on its rim will be
4 I
6 I
8 I
9 I
10.
Which is the wrong relation from the following?
t = I a
F = ma
L = I w
I = t a
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