On counting the number of compressions or rarefactions crossing per unit time, we can get
A
wavelength of the wave
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B
intensity of the wave
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C
frequency of the wave
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D
amplitude of the wave
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Solution
The correct option is C frequency of the wave A longitudinal wave is formed by compressions and rarefactions , and frequency is defined as the number of waves crossing per unit time i.e. number of compressions and rarefactions crossing per unit time .