Neco 2020 Physics Question 1
Practice objective / multiple choice question 1 from the 2020 Neco Physics examination.
Two sinusoidal waves travel in the same direction along a stretched string. The first wave has wavelength \(0.68\ \text{m}\) and the wave speed in the string is \(340\ \text{m\ s}^{-1}\). The second wave has the same amplitude but an unknown frequency. When the two waves interfere, the resultant amplitude reaches a maximum (a beat) \(12\) times in \(5\ \text{s}\). Assuming the second wave's frequency is higher than the first, determine the frequency of the second wave in hertz.
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About This Question
This is Neco 2020 Physics Question 1. It is one of the objective questions from the 2020 Neco Physics examination.
Difficulty level: Medium .
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