Sound waves travel as successive compressions and rarefactions. The distance from a centre of compression to next centre of compression, in terms of wavelength λ, is equal to
The correct answer is (b) λ.
In a sound wave, one full wavelength (λ) includes a complete cycle of one compression and one rarefaction. The distance from the center of one compression to the next compression is exactly one wavelength (λ).
Class 9th Science NCERT MCQ Questions
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(b) For sound waves (in general for all longitudinal waves) distance from centre of one compression (or rarefaction) to next centre of compression (or rarefaction) is equal to one wavelength λ.
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