When the amplitude of vibration is large, the sound produced is
Loud
Feeble
High pitched
Low pitched
When the amplitude of vibration is large, the sound produced is louder.
State whether the following statements are true or false:
(a) Sound cannot travel in vacuum.
(b) The number of oscillations per second of a vibrating object is called its time-period.
(c) If the amplitude of vibrations is large, sound is feeble.
(d) The lower the frequency of vibration, the higher is the pitch.
(e) If the amplitude of vibrations is doubled, the loudness of sound also gets doubled.
(f) When the amplitude of vibrations is halved, the loudness of sound becomes one-fourth.
(g) Unwanted or unpleasant sound is termed as music.
(h) Noise pollution may cause partial hearing impairment.
What is the difference between a low pitched and high pitched sound?
(a) Explain the term 'pitch' of a sound. On what factor does the 'pitch' of a sound depend ?
(b) Draw labelled diagrams to represent sound of (a) low pitch, and (b) high pitch, of the same loudness.