Question

In a longitudinal wave, the distance between two consecutive …………… is equal to …………… wavelength(s).
(a) compressions, one
(b) compressions, two
(c) crests, one
(d) crests, two

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Answer

(a) compressions, one

Reason — In a longitudinal wave, the distance between two consecutive compressions (regions of high pressure) is equal to one wavelength.

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