Gce Model Questions Vol1 2019 Physics Question 34
Practice objective / multiple choice question 34 from the 2019 Gce Model Questions Vol1 Physics examination.
A source emits sound of frequency \(f_{s}=500\ \text{Hz}\). An observer moves towards the source at \(10\ \text{m s}^{-1}\) while the source moves towards the observer at an unknown speed \(v_{s}\). The observer hears a frequency that is exactly twice the emitted frequency. (Take the speed of sound in air as \(c=340\ \text{m s}^{-1}\).) Determine the speed \(v_{s}\) of the source. Then, if the source were stationary and the observer moved towards it at \(10\ \text{m s}^{-1}\), what frequency would the observer hear? Give your answer to one decimal place.
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About This Question
This is Gce Model Questions Vol1 2019 Physics Question 34. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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