if the scales on the x and y axes of the two graphs are the same – Discussion Forum

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Kriti

Asked: October 14, 2026In: Class 9 Science

Graphs representing two sound waves are given in Fig. 10.30. If the scales on the X and Y axes of the two graphs are the same, which of the two sound waves has (i) greater wavelength and (ii) smaller amplitude?

Wave (a) has the greater wavelength because its consecutive crests are spaced farther apart along the distance axis and it also possesses the smaller amplitude due to lower vertical crest height. Class 9 Science Exploration Chapter 10 Important Questions from Sound ...