Lesson 5.2.1

5.2.1 Kinematics of circular motion Quiz: OCR Physics, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 5.2.1, Kinematics of circular motion: 20 multiple choice questions for the OCR Physics (H156), Unit 4: Newtonian world and astrophysics, written with Revision Ninja.

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The 20 questions

  1. One radian is the angle subtended at a circle centre when arc length equals what?

    • Diameter
    • Pi
    • Radius
    • Circumference

  2. How many radians are in a complete circle?

    • pi rad
    • 1 rad
    • 360 rad
    • 2 pi rad

  3. An angle of 90 degrees expressed in radians is:

    • 2 pi rad
    • pi rad
    • pi/2 rad
    • pi/4 rad

  4. What term describes the time taken for an object to complete one full circular revolution?

    • Frequency
    • Centripetal time
    • Period
    • Angular velocity

  5. An object has period 0.20 s in circular motion. What is its frequency?

    • 0.20 rad/s
    • 5.0 Hz
    • 2.0 Hz
    • 0.20 Hz

  6. An object rotates at a frequency of 2.0 Hz. What is its angular velocity?

    • 12.6 rad/s
    • 2.0 rad/s
    • 1.0 rad/s
    • 4.0 rad/s

  7. A wheel completes one revolution in 0.25 s. What is its angular velocity?

    • 4.0 rad/s
    • 2.0 rad/s
    • 1.6 rad/s
    • 25 rad/s

  8. The unit of angular velocity is:

    • rad s^-1
    • rev m^-1
    • s^-2
    • m s^-1

  9. Angular velocity omega is related to frequency f by:

    • omega = 1/f
    • omega = f/(2 pi)
    • omega = 2 pi f
    • omega = f^2

  10. A point at radius 0.50 m rotates at 2.0 Hz. What is its linear speed?

    • 1.0 m/s
    • 12.6 m/s
    • 2.0 m/s
    • 6.3 m/s

  11. A turntable makes 120 revolutions per minute. What is its angular velocity?

    • 2.0 rad/s
    • 12.6 rad/s
    • 120 rad/s
    • 7.2 rad/s

  12. Through how many radians does an object turn in 3 complete revolutions?

    • 3 rad
    • 12 pi rad
    • 6 pi rad
    • 3 pi rad

  13. An object has angular velocity 3.0 rad/s. What is its period?

    • 18.8 s
    • 2.1 s
    • 3.0 s
    • 0.48 s

  14. A CD spins at 500 revolutions per minute. How long does it take to complete 10 revolutions?

    • 1.2 s
    • 20 s
    • 0.12 s
    • 12 s

  15. Two points lie on a rotating disc at radii r and 2r. Their linear speeds have ratio:

    • 2:1
    • 1:2
    • 1:4
    • 1:1

  16. Which expression is NOT a valid expression for angular velocity?

    • v/r
    • 2 pi/T
    • r/v
    • 2 pi f

  17. Which scalar quantity remains constant for an object undergoing uniform circular motion?

    • Acceleration
    • Speed
    • Velocity
    • Displacement

  18. The Earth rotates once every 24 hours. What is its angular velocity?

    • 6.3 rad/s
    • 2.6 x 10^-6 rad/s
    • 1.2 x 10^-3 rad/s
    • 7.3 x 10^-5 rad/s

  19. A ball on a string has speed 4.0 m/s and radius 0.80 m. What is its period?

    • 3.2 s
    • 5.0 s
    • 0.20 s
    • 1.3 s

  20. One radian is approximately equal to how many degrees?

    • 57.3 degrees
    • 114.6 degrees
    • 1 degree
    • 360 degrees

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