Neco Model Questions Vol1 2019 Physics Question 45
Practice objective / multiple choice question 45 from the 2019 Neco Model Questions Vol1 Physics examination.
A police siren emits a sound of frequency \(800\) Hz. The police car approaches a stationary observer at \(30\) m s\(^{-1}\). The speed of sound in air is \(340\) m s\(^{-1}\). After passing the observer, the car continues away at the same speed. Find the ratio of the observed frequency just before the car passes the observer to the observed frequency just after it has passed.
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About This Question
This is Neco Model Questions Vol1 2019 Physics Question 45. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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