Neco Model Questions Vol1 2019 Physics Question 39
Practice objective / multiple choice question 39 from the 2019 Neco Model Questions Vol1 Physics examination.
A train moving at \(30\ \text{m s}^{-1}\) towards a stationary observer sounds its horn with a frequency of 500 Hz. The speed of sound in air is \(340\ \text{m s}^{-1}\). (a) What frequency does the observer hear? (b) If the observer now walks away from the train at \(10\ \text{m s}^{-1}\) while the train continues at the same speed, what frequency does he hear then? Give your answers in hertz, rounded to the nearest whole number.
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About This Question
This is Neco Model Questions Vol1 2019 Physics Question 39. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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