Neco 2019 Physics Question 27
Practice objective / multiple choice question 27 from the 2019 Neco Physics examination.
A stationary source \(S_{1}\) emits sound of frequency \(500\ \text{Hz}\) in air where the speed of sound is \(340\ \text{m·s}^{-1}\). A second identical source \(S_{2}\) is placed \(30\ \text{m}\) behind \(S_{1}\) along the same line. An observer moves towards \(S_{1}\) with a speed of \(20\ \text{m·s}^{-1}\). Determine the beat frequency heard by the observer due to the interference of the waves from \(S_{1}\) and \(S_{2}\).
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About This Question
This is Neco 2019 Physics Question 27. It is one of the objective questions from the 2019 Neco Physics examination.
Difficulty level: Medium .
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