Gce Model Questions Vol1 2020 Physics Question 7
Practice objective / multiple choice question 7 from the 2020 Gce Model Questions Vol1 Physics examination.
A tuning fork produces a pure tone of frequency \(f = 1000\ \text{Hz}\). The source moves directly towards a stationary observer with speed \(v_s = 15\ \text{m s}^{-1}\). Simultaneously, the observer moves directly away from the source with speed \(v_o = 5\ \text{m s}^{-1}\). The air temperature is \(20^{\circ}\text{C}\) and a uniform wind of speed \(w = 4\ \text{m s}^{-1}\) blows from the source towards the observer, assisting the propagation of the sound. Assuming the speed of sound in still air is \(v = 331 + 0.6T\) where \(T\) is in \(^{\circ}\text{C}\), calculate the frequency heard by the observer (to the nearest hertz).
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About This Question
This is Gce Model Questions Vol1 2020 Physics Question 7. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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