Question

voltag
3. (a) (i) What is an overtone in sound?
(ii) A string of length 1.0 m and mass 10.0 g is stretched
between two fixed points. If the tension in the string is 200N, find
the frequency of the second harmonic.
(ii) Fi
freque
(ii) A
source
flowir
(b) Describe with the aid of a labelled diagram, an experiment to
determine resonance of sound in air,
(d) W
typer
(c) (i) What is meant by doppler effect?
(ii) A motor cyclist and a police car are approaching each other
moving at speeds of 20ms and 30 ms respectively. If the police
siren is sounded at 600Hz, calculate the frequency of the note
heard by the cyclist after the police car passes by.
(e) Ei
8. (a
(d) () What is meant by beats?
(ii) By using the principle of superposition of waves, explain
the formation of beats.
(b)
and
(e) Describe the variation of pressure with displacement of air in
a closed pipe vibrating with fundamental frequency.​

Answer 1

Answer:

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