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WAEC Physics 2018 Paper

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Question : 36

Total: 50

The diagram above illustrates a waveform. Determine the number of wavelengths in it

4
3 $\;\frac{1}{2}$
2 $\;\frac{1}{2}$
2

Solution:

Number of wavelengths = Number of oscillations

Number of wavelengths = $\;\frac{1}{4} + \;\frac{1}{2} + \;\frac{1}{2} + \;\frac{1}{2} + \;\frac{1}{2} + \;\frac{1}{4}$ = 2 $\;\frac{1}{2}$

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