Pitch and Frequency
Physics ⇒ Waves and Sound
Pitch and Frequency starts at 7 and continues till grade 12.
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See sample questions for grade 11
A siren emits a sound at 1000 Hz. If the siren moves towards a stationary observer, what happens to the pitch heard by the observer?
A sound wave has a frequency of 500 Hz. If the speed of sound in air is 340 m/s, what is its wavelength?
A sound wave has a period of 0.002 seconds. What is its frequency?
A sound wave in water has a frequency of 1000 Hz and a speed of 1500 m/s. Calculate its wavelength.
A tuning fork produces a sound of 256 Hz. What will happen to the pitch if a tuning fork of 512 Hz is used instead?
Describe how the pitch of a sound changes if the frequency is halved.
Describe what is meant by the term 'ultrasonic'.
Explain the difference between pitch and frequency.
Explain why a child’s voice generally has a higher pitch than an adult male’s voice.
Explain why two musical instruments playing the same note may sound different even if they have the same pitch and frequency.
If a guitar string vibrates at 440 Hz, what is the pitch of the note produced called?
If a sound wave has a frequency of 100 Hz and a wavelength of 3.4 m, what is the speed of sound in the medium?
If the frequency of a sound wave is increased, what happens to its wavelength (assuming the speed of sound is constant)?
What is the physical quantity that determines the pitch of a sound?
