Unit 3: Circular and Rotational Motion — Mcqs

11th Class Physics · Unit 3: Circular and Rotational Motion

0 of 0 answered 0 correct

MCQ's (Exercise + Extra)

1.The ratio of angular speed of minute's hand and hour's hand of watch is:

2.A body travelling in a circle at constant speed:

3.A stone at the end of long string is whirled in vertical circle at a constant speed The tension in the string will be minimum when the stone is:

4.Every point of rotating rigid body has:

5.The minimum velocity necessary to put a satellite into the orbit is called:

6.An astronaut is orbiting around the Earth in a large capsule. Then,

a He will be in a state of weightlessness with respect to capsule
b he is freely falling towards the Earth
c A ball projected at an angle has a straight line path as observed by him
d All the above

7.An object in uniform circular motion makes 10 revolutions in 2 seconds. Which of the following statement is true?

8.A man inside the artificial satellite feels weightlessness because the force of attraction due to the Earth is:

9.A bottle of soda water is grasped from the neck and swung briskly in a vertical circle. Near which portion of the bottle do the bubbles collect?

10.The moment of inertia of body depends upon:

SLO Based Additional MCQs + Past papers MCQs of Punjab Boards

Angular displacement

1.In two revolutions along a circle of radius r, a point P covers a distance of:

2.In one revolution the angular displacement covered is:

Unit of angular displacement

3.SI unit of angular displacement is:

Relation between arc length and radius

4.If arc distance is equal two times of radius of circle, then angle traced will be:

a 30°
b 45°
c 180°
d 360°

Radian

5.A wheel of radius 2m turns through an angle of 57.3°. It lays out a tangential distance:

6.π radian is equal to:

7.One radian is equal to:

8.2 radians = -------:

Centripetal force

9.Magnitude of centripetal acceleration is:

10.The force needed to bend the normally straight path of the particle into circle is:

11.The work done by the centripetal force is:

12.The relation for centripetal force is:

13.When a body is whirled in a horizontal circle by means of a string, the centripetal force is supplied by:

14.A 1000kg truck is turning round a corner of radius 100m with speed 72km/h, centripetal force is ____ N.

15.The expression for centripetal force is given by:

Motion in circular path

16.The direction of motion of a particle moving in a circle is along the:

17.The mud flies off the tyre of a moving bicycle which is along:

18.When a ball is rotating in a circular path at the end of string is released, it will move:

Relation between linear and angular motion

19.For a particle moving in a circle of radius 'r' with linear acceleration 'a' and angular acceleration 'α' the relation is:

20.In angular motion (2 αθ) is equal to:

a v²f - v²i
b ω²f - ω²i
c vf - vi
d ω²f - ω²i

21.The relation for torque is:

22.A wheel 2m in diameter makes 15rev.min⁻¹ the linear speed of the point on its rim in m/sec is:

23.When a body moves in circle the angle between its linear velocity and angular velocity is always:

24.A wheel of radius 3m turns through an angle of 57.3°. It lays out a tangential distance:

25.A wheel of radius 50cm having an angular speed 5 rad/sec will have linear speed:

26.A body rotating with angular velocity of 2rad.s⁻¹ and linear velocity is 2 ms⁻¹, then radius of circle is:

Angular acceleration

27.The time rate of change of angular displacement is called:

28.The rate of change of angular velocity is:

29.Direction of angular acceleration is always along:

Artificial gravity

30.Artificial gravity is provided to the satellite by:

31.To create artificial gravity, the critical frequency of space station about its vertical axis is:

Angular momentum

32.SI unit of angular momentum is:

a J s
b kgmsec³
c kgm²s⁻¹
d kgms⁻²

33.Law of conservation of angular momentum is important in:

34.In the absence of external force, the change in momentum is:

Critical velocity

35.The critical velocity of satellite orbiting close to earth is:

36.The minimum velocity required to put a satellite into orbit is:

37.If the radius of earth is doubled then value of critical velocity becomes:

a 1/√2 v₀
b 1/2 v₀
c √2v₀
d 1/4 v₀

38.An orbital speed of a satellite can be determined by the equation:

Moment of inertia

39.Moment off inertia depends upon:

40.If a mass "m" is placed at a distance "r" from a line then its moment of inertia about the line:

Relation between radian and degrees

41.Angle of 30° will be in radian:

Apparent weight

42.A body of mass 10kg is allowed to fall freely its apparent weight becomes:

Revolution

43.2 revolutions are equal to:

Angular velocity

44.The dimension of angular velocity is:

Rotational motion

45.Rotational analogue of force is:

46.The relation for torque is: