Waec Model Questions Vol1 2019 Physics Question 3
Practice objective / multiple choice question 3 from the 2019 Waec Model Questions Vol1 Physics examination.
A police siren emits a sound of frequency 800 Hz. The siren is mounted on a car moving directly towards a stationary observer. The observer also hears a stationary source that emits a sound of frequency 840 Hz. The observer perceives a beat frequency of 40 Hz. Assuming the speed of sound in air is 340 m s⁻¹, determine the speed of the car (in metres per second, to the nearest whole number).
Answer Options
About This Question
This is Waec Model Questions Vol1 2019 Physics Question 3. It is one of the objective questions from the 2019 Waec 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.