Question

A $12m$ long vibrating string has the speed of wave $48m/s$. To what frequency it will resonate?

• A. 2 cps
• B. 4 cps
• C. 6 cps
• D. All of these

Answer 1

Answer: (D)

$v=48m/s,l=12m,f=\frac{nv}{2l}$
$f=2n($ where $n=1,2,3\dots \dots )$