Sound WavesHard
Question
A man generates a symmetrical pulse in a string by moving his hand up and down. At t = 0 the point in his hand moves downward. The pulse travels with speed of 3 m/s on the string & his hands passes 6 times in each second from the mean position. Then the point on the string at a distance 3m will reach its upper extreme first time at time t =
Options
A.1.25 sec
B.1 sec
C.
sec
secD.none
Solution
Frequency of wave = 
= 3 ⇒ T = 
s ; λ = vT = (3)
= 1 m
Total time taken =
= 1.25 sec
= 3 ⇒ T = s ; λ = vT = (3) = 1 m Total time taken =
= 1.25 secCreate a free account to view solution
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