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CBSE Class 9 Answered

SOUND
Asked by | 19 Jul, 2009, 07:39: AM
answered-by-expert Expert Answer

No. of crests and troughs = 40

No. of waves formed = 40

Time = 0.4 s

Frequency = 40 / 0.4   =  100 s-1

Answered by | 06 Aug, 2009, 01:00: PM

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