Quiz  /  Oscillations and Waves Class 9 MCQ Questions With Answers

  • 1. 
    The wave can propagate without any medium. It is the characteristic of these waves, except . . . .

  • Light
  • Electromagnetic wave
  • Infrared
  • Sound wave

  • 2. 
    The maximum displacement of a point of a wave from its rest position or equilibrium point is called . . . .

  • Amplitude
  • Frequency
  • Crests
  • Period

  • 3. 
    The range audiosonic frequency is . . . .

  • 20 - 2000 Hz
  • 10 - 10 000 Hz
  • 20 - 20 000 Hz
  • 20 - 10 000 Hz

  • 4. 
    The number of waves passing a point each second is . . . .

  • Period
  • Longitudinal waves
  • Frequency
  • Wavelength

  • 5. 
    Calculate the time period of a wave with a frequency of 50 Hz.

  • 50 seconds
  • 5 seconds
  • 0.2 second
  • 0.02 second

  • 6. 
    From the following image, what is its frequency?

  • 20 Hz
  • 10 Hz
  • 0.5 Hz
  • 0.05 Hz

  • 7. 
    A pendulum is observed to complete 30 full cycles in 120 seconds. Determine the period of the pendulum.

  • 90 seconds
  • 6 seconds
  • 4 seconds
  • 0.25 second

  • 8. 
    Jovian screams near a canyon and can hear his echo 3 seconds later. If the speed of sound at that time is 300 m/s, what is the distance between Jovian and the canyon>

  • 900 m
  • 300 m
  • 150 m
  • 100 m

  • 9. 
    We know that the wavelength is 20 m. If the time period is 0.5 second, the wave speed is . . . .

  • 40 m/s
  • 20 m/s
  • 10 m/s
  • 5 m/s

  • 10. 
    A pendulum swings 5 times in a second. What is its frequency?

  • 0.2 s
  • 0.5 s
  • 1.0 s
  • 5.0 s

  • 11. 
    A violin string could vibrate with frequency of 1 kHz. The time period is . . . .

  • 1000 s
  • 10 s
  • 0.1 s
  • 0.001 s

  • 12. 
    Jason heard a thunder 2 seconds after he saw the lightning. If the speed of sound is 300 m/s, what is the distance between Jason and the lightning?

  • 600 m
  • 302 m
  • 300 m
  • 150 m

  • 13. 
    If the pendulum goes from A to C in 1 second, what is the period of the oscillation?

  • 0.5 s
  • 1.0 s
  • 1.5 s
  • 2.0 s

  • 14. 
    Wave period means . . . .

  • the highest point above the rest position
  • the time taken for a full cycle of the wave
  • the maximum displacement of a point of a wave from its rest position
  • the number of waves passing a point each second

  • 15. 
    A change of amplitude will change:

  • the wavelength
  • the loudness
  • the frequency
  • the pitch

  • 16. 
    An imaginary line that is perpendicular to any surfaces is called . . . .

  • imaginary line
  • vertical line
  • normal line
  • straight line

  • 17. 
    From the following image, what is the period of this wave?

  • 5 seconds
  • 10 seconds
  • 15 seconds
  • 20 seconds

  • 18. 
    A sound wave has a frequency of 50 Hz. If its wavelength is 3 m, calculate its wave speed.

  • 16.7 m/s
  • 60 m/s
  • 75 m/s
  • 150 m/s

  • 19. 
    A pendulum has a time period of 0.4 s. What is its frequency?

  • 0.4 Hz
  • 1.0 Hz
  • 2.5 Hz
  • 4.0 Hz

  • 20. 
    In centimeters, what is the amplitude of the wave?

  • 0 cm
  • 10 cm
  • 15 cm
  • 30 cm

  • 21. 
    Bunyi pantulan yang terjadi hampir bersamaan dengan bunyi asli dan terdengar saling bertumpuk disebut dengan . . . .

  • Gaung
  • Gema
  • Akustik
  • Feedback

  • 22. 
    Look at the following figure. The wavelength of the transverse wave is . . . .

  • 10 m
  • 20 m
  • 30 m
  • 40 m
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