Neco Model Questions Vol1 2025 Physics Question 20
Practice objective / multiple choice question 20 from the 2025 Neco Model Questions Vol1 Physics examination.
A source emits a sound of frequency \(f_{1}=800\ \text{Hz}\). An observer moves directly towards this source with speed \(v_{o}=10\ \text{m s}^{-1}\). The speed of sound in air is \(v=340\ \text{m s}^{-1}\). At the same time, a second stationary source located \(30\ \text{m}\) behind the observer emits sound of frequency \(f_{2}=820\ \text{Hz}\). (i) Find the frequencies heard by the observer from each source. (ii) Determine the beat frequency produced by the superposition of the two received sounds.
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About This Question
This is Neco Model Questions Vol1 2025 Physics Question 20. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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