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Physics, 13.01.2021 15:20 sheilashair
A whistle emitting a note of 4 kHz is
whirled in a horizontal circle of radius 1 m at a constant speed. If the highest note heard
by a person a large distance away is 4200 Hz, find:
(i) the speed of the whistle
(ii) the lowest note heard by the person,
(iii) the time taken for the whistle to make on complete revolution,
(iv) the time interval between the person hearing the highest and lowest note.
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A whistle emitting a note of 4 kHz is
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