Neco Model Questions Vol1 2021 Physics Question 28
Practice objective / multiple choice question 28 from the 2021 Neco Model Questions Vol1 Physics examination.
The speed of sound in air varies with temperature as \(v = 331 + 0.6T\) (m s⁻¹, \(T\) in °C). At a temperature of \(30^{\circ}\text{C}\) a source emits sound of frequency \(500\;\text{Hz}\) and moves directly towards a stationary observer with a speed of \(20\;\text{m\,s}^{-1}\). A second identical source remains stationary and also emits \(500\;\text{Hz}\). Determine the beat frequency heard by the observer.
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About This Question
This is Neco Model Questions Vol1 2021 Physics Question 28. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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