Neco Model Questions Vol1 2023 Physics Question 8
Practice objective / multiple choice question 8 from the 2023 Neco Model Questions Vol1 Physics examination.
A police car moving directly towards a stationary observer emits a siren of frequency 800 Hz. The speed of sound in air is 340 m s⁻¹. (i) If the observer hears a frequency of 880 Hz, determine the speed of the police car. (ii) After the car passes the observer and moves away with the same speed, what frequency does the observer hear? (iii) Suppose instead that while the car moves towards the observer at that speed, the observer is on a train moving towards the car at 20 m s⁻¹. What frequency is now heard by the observer?
Answer Options
About This Question
This is Neco Model Questions Vol1 2023 Physics Question 8. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.