Neco 2017 Physics Question 7
Practice objective / multiple choice question 7 from the 2017 Neco Physics examination.
A source of sound moves directly towards a stationary observer with a speed of \(30\,\text{m s}^{-1}\). The speed of sound in air is \(340\,\text{m s}^{-1}\). The source emits a sound of unknown frequency \(f_{s}\). At the same time the observer hears a second source at rest that emits a frequency of \(520\,\text{Hz}\). The observer reports a beat frequency of \(10\,\text{Hz}\) between the two sounds. Determine the frequency \(f_{s}\) emitted by the moving source (in Hz, to the nearest hertz).
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About This Question
This is Neco 2017 Physics Question 7. It is one of the objective questions from the 2017 Neco Physics examination.
Difficulty level: Medium .
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