A source produces 20 crest's and 20 troughs in 4 second's. The second crest is 3cm away from the first crest. Calculate
i) Wavelength
ii) frequency
iii) wave speed
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There are 20 crests and 20 trough in
0.2s, which implies 20 waves. And if there are 20 crests and 20 trough, this mean that there are 20 waves in 0.2s
... Frequency Number of waves/ Time
taken
0.2
20
=
2
200
=100H
Z
...v=100H
Z
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