# Multiple Choice Questions on Circular Motion

The multiple choice questions for the topic: Circular Motion, are as below:

01. Centrifugal Force (CFF) is a ________ force

02. Angle between CFF and position vector is
(a) 0°
(b) 90°
(c) 180°
(d) 270°

03. True or False: Centripetal Force (CPF) is responsible for UCM

04. The String Tensions in Vertical Circular Motion at the lowest point is ____ mg

05. Maximum Safe Speed depends on a frictionless curved banked road depends on Radius (r), Acceleration due to gravity (g), and ____________

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06. The Total Energy in Vertical Circular Motion is ___ mrg

07. In Washing Machines, drying of clothes mechanism works on principle of ______

08. In a curved banked road, _______ component of normal reaction provides Centripetal Force

09. The Potential Energy in Vertical Circular Motion at highest point is ___ mrg

10. True or False: On a Horizontal Curved Road, Maximum speed depends upon coefficient of friction (µ), and Radius of curvature of road (r) and Angle of Banking Θ.

11. Right Hand Rule: Imagine the axis of rotation to be held in the right hand with fingers curled around it and thumb stretched along the axis of rotation. If the curled fingers denotes the sense of rotation, then the thumb denotes the direction of infinitesimal angular displacement or ________________

12. True or False: Angle of banking of road determines the maximum speed of vehicle. For car race tracks, angle of banking is more.

13. For a particle performing circular motion, the linear acceleration tangential to the path that produces a change in linear speed of the particle is called the ____________________

14. True or False: On a Horizontal Curved Road, Centripetal force is provided by force of friction and weight of the vehicle.

15. The principle of ________ pendulum is used in construction of centrifuge governor and for regulating speed of engines

16. The angle described by the radius vector at the centre of the circle when particle moves from one point to another point on the circumference of the circle is called ___________________

17. True or False: On a Banked Curved Road Maximum speed depends upon weight of the vehicle.

18. The angle described by the particle per unit time is called ________________

19. True or False: Centrifugal Force (CFF) is the cause of Circular Motion

20. The Earth’s shape, i.e. Bulging at equators, flattening at poles is due to _______
(a) Tectonic Plate Movement
(b) Tilt of Rotational Axis
(c) Centrifugal Force
(d) Centripetal Force

21. For Moon revolving earth, the the centripetal force is provided by _______

22. The following Parameter is Zero in a Uniform Circular Motion:
(a) linear speed
(b) power
(c) angular velocity
(d) linear velocity

23. For Train traveling on curved railroad, the the centripetal force is provided by _______

24. In a Conical Pendulum, Time period depends on
(a) length of pendulum
(b) angle of inclination
(c) both (a) and (b)
(d) neither (a) nor (b)

25. The following Parameter is Not Zero in a Uniform Circular Motion:
(a) angular acceleration
(b) work done
(c) torque
(d) kinetic energy

26. True or False: Angular Momentum of a body performing UCM is Zero

27. True or False: Centrifugal Force (CFF) arises in inertial frame of reference

28. The following Parameter is a variable in a Uniform Circular Motion:
(a) linear speed
(b) angular speed
(c) angular velocity
(d) linear velocity

29. One of the characteristics of UCM is that direction of linear velocity is along ___________ of circle
(b) Chord
(c) Tangent
(d) Centre

30. For Electrons revolving in permitted circular orbits, the centripetal force is provided by _______

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## Answers to Multiple Choice Questions on Circular Motion

01: fictitious
02: (a) 0°
03: True
04: 6
05: Angle of Banking Θ
06: 2.5
07: Centrifugal Force
08: Horizontal
09: 2
10: False {On a Horizontal Curved Road, Angle of Banking Θ is zero}
11: Angular Velocity
12: True
13: Tangential Acceleration
14: False {Centripetal force is provided only by force of friction, CPF = µmg}
15: Conical
16: Angular Displacement
17: False {Maximum speed is independent of weight of vehicle}
18: Angular Speed
19: False {It is the effect of Circular Motion}
20: (c) Centrifugal Force
21: Gravitational force
22: (b) Power
23: Push of rails on wheels
24: (c) both (a) and (b)
25: (d) kinetic energy
26: False {Non-Zero and Constant}
27: False {non-inertial frame of reference}
28: (d) linear velocity {Although magnitude is constant, direction changes continuously}
29: (c) Tangent
30: Electrostatic force of attraction