Neco Model Questions Vol1 2020 Physics Question 34
Practice objective / multiple choice question 34 from the 2020 Neco Model Questions Vol1 Physics examination.
A source of sound emits a frequency of \(500\ \text{Hz}\) in air where the speed of sound is \(340\ \text{m·s}^{-1}\). An observer moves directly towards the source with a speed of \(20\ \text{m·s}^{-1}\) while the source simultaneously moves directly away from the observer with a speed of \(10\ \text{m·s}^{-1}\). (a) Calculate the frequency heard by the observer. (b) A second stationary source emits a frequency of \(540\ \text{Hz}\). Determine the beat frequency heard by the moving observer.
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About This Question
This is Neco Model Questions Vol1 2020 Physics Question 34. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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