2 Answers

Ericcurtin · Answer 1 · 2019-05-22T14:03:04+0000

D represents the wavelength in your problem. The wavelength is the measurement between two crests and can be measured on the bottom crest or the top crest.

TheShun · Answer 2 · 2019-05-27T11:52:26+0000

Answer: Letter D represents the wavelength of the wave.

Step-by-step explanation: We are given a wave in the image. Wave comprises of crests and troughs.

Wavelength of a wave is defined as the distance between the two crests or two troughs or one crest and one trough.

And here letter D is the distance between the two troughs. Hence, this indicates the wavelength of the wave.

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