Waec Model Questions Vol1 2021 Physics Question 41
Practice objective / multiple choice question 41 from the 2021 Waec Model Questions Vol1 Physics examination.
A source of sound emits a frequency of 800 Hz and moves directly towards a stationary observer with a speed of 30 m s⁻¹. At the same instant the observer moves directly away from the source with a speed of 20 m s⁻¹. The speed of sound in air is 340 m s⁻¹. What frequency does the observer hear? (Give your answer in hertz, rounded to the nearest whole number.)
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About This Question
This is Waec Model Questions Vol1 2021 Physics Question 41. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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