Which of the following frequency of sound can be generated by a vibrating simple pendulum as well as by the vibrating vocal cords of a rhinoceros ?
(a) 5 kHz (b) 25 Hz (c) 10 Hz (d) 15,000 Hz
Consider the following sound waves marked A, B, C and D :
(a) Which two waves represent sounds of the same loudness but different pitch?
(b) Which two waves represent sounds of the same frequency but different loudness?
(c) State whether all these sound waves have been produced by the same vibrating body or different vibrating bodies?
(d) Which vibrating body/ bodies could have generated the sound waves shown here?
What type of sound waves are produced by a vibrating simple pendulum ?
(a) What is meant by the 'time-period' of a vibrating object? State its unit.
(b) Define 'frequency' of a vibrating object. Name the unit in which frequency is measured.
(c) A pendulum oscillates 40 times in 4 seconds. Calculate its (i) time-period. and (ii) frequency. Can we hear the sound produced by the oscillations of this pendulum? Give reason for your answer.