A $12 \,m$ long vibrating string has the speed of wave $48 \,m / s$. To what frequency it will resonate ........... $cps$
A$2$
B$4$
C$6$
D
All of these
Medium
Download our app for free and get started
D
All of these
d (d)
$v=48 \,m / s , l=12 \,m , f=\frac{n v}{2 l}$
$f=2 n$ (where $n=1,2,3 \ldots$. )
Hence answer is $(d)$.
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
An engine is moving with uniform speed along a circular track emitting a sound of frequency $400\, Hz$ as shown in the figure. Speed of engine is $30\, m/sec$ and speed of sound is $330\, m/sec$. An observer is standing inside the track. Maximum frequency observed by the observer is
The driver of a car travelling with speed $30$ metres per second towards a hill sounds a horn of frequency $600 Hz$. If the velocity of sound in air is $330$ metres per second, the frequency of the reflected sound as heard by the driver is .... $Hz$