CUET Preparation Today
If $v$ is the frequency of ac mains, then the frequency of sonometer wire at resonance is: |
$v/2$ $v$ $2v$ $4v$ |
$2v$ |
The correct answer is Option (3) → $2v$ Given, $f_1$, frequency of A.C. mains = $v$ ∴ f, frequency of sonometer wire = $2×f_1$ $=2v$ |
