According to the SI system, the wavelength of a wave is measured in _______.

second

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hertz

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metre

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decibel

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Solution

The correct option is C metre
Wavelength is the distance between two consecutive crests or troughs, (compressions or rarefactions) in a wave. Since, wavelength is a measure of distance, it is also measured in the same unit as that of length in the SI system, i.e. metre (m).

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