Neco Model Questions Vol1 2022 Physics Question 11
Practice objective / multiple choice question 11 from the 2022 Neco Model Questions Vol1 Physics examination.
A police siren emits a sound of frequency 800\,Hz. An observer moves directly towards the source at 20\,m\,s\(^{-1}\) and hears a frequency of 860\,Hz. Assuming the speed of sound in air is 340\,m\,s\(^{-1}\), determine the speed of the siren (in m\,s\(^{-1}\)) if it is moving directly towards the observer.
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About This Question
This is Neco Model Questions Vol1 2022 Physics Question 11. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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