Gce Model Questions Vol1 2020 Physics Question 35
Practice objective / multiple choice question 35 from the 2020 Gce Model Questions Vol1 Physics examination.
A source emits sound of frequency \(f = 500\ \text{Hz}\). The source moves directly towards a stationary observer at a speed of \(20\ \text{m s}^{-1}\). At the same time, a second identical source (also \(500\ \text{Hz}\)) is stationary, while the observer moves directly away from it at \(10\ \text{m s}^{-1}\). The speed of sound in air is \(v = 340\ \text{m s}^{-1}\). (a) What frequency does the observer hear from the approaching source? (b) What frequency does the observer hear from the receding source? (c) What is the beat frequency between the two received sounds?
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About This Question
This is Gce Model Questions Vol1 2020 Physics Question 35. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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