Neco Model Questions Vol1 2017 Physics Question 11
Practice objective / multiple choice question 11 from the 2017 Neco Model Questions Vol1 Physics examination.
A stationary source emits sound of unknown frequency. An observer moves directly towards the source at a constant speed and hears a frequency of \(660\ \text{Hz}\). When the observer reverses direction and moves directly away from the source at the same speed, the heard frequency is \(540\ \text{Hz}\). The speed of sound in air is \(330\ \text{m\,s}^{-1}\). Determine (i) the speed of the observer and (ii) the original frequency emitted by the source.
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About This Question
This is Neco Model Questions Vol1 2017 Physics Question 11. It is one of the objective questions from the 2017 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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