Question

A source produces 15 crests and 15 troughs in 3 sec.When the second crest is produced,the first is 2 cm away from the source.Calculate the frequency,wavelength and speed of the wave.....​

Answer 1

Answer:

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Answer 2

Answer:

Explanation:

time in producing 15 trough and crests= 3 sec

distance covered by wavelength = 15λ in 3 sec

time to cover the distance of λ; T = 0.2 sec

so,

frequency = v = 1/T

as we know when the second crest is produced it is 2cm away from source, so λ= 2cm or 0.02m

so speed v= λv