Neco Model Questions Vol1 2021 Physics Question 25
Practice objective / multiple choice question 25 from the 2021 Neco Model Questions Vol1 Physics examination.
A train moving towards a stationary observer at 30 m s⁻¹ sounds its horn at a frequency of 500 Hz. The observer is 200 m from the point where the train will pass directly in front of him. At the instant when the train is 100 m away (still approaching), a vertical wall located 150 m beyond the observer reflects the sound back toward the observer. Taking the speed of sound as 340 m s⁻¹, determine the frequency of the reflected sound heard by the observer at that instant.
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About This Question
This is Neco Model Questions Vol1 2021 Physics Question 25. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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