A) 5
B) 7.5
C) 3
D) 15
Correct Answer: A
Solution :
: Distance between two consecutive crests\[=\lambda \] \[\therefore \]\[\lambda =3\,cm\] Velocity \[(v)=\frac{distance}{time}=\frac{45}{3}=15\text{ }cm/s\] \[\therefore \]Frequency\[(n)=\frac{v}{\lambda }=\frac{15}{3}=5\,Hz\]You need to login to perform this action.
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