The frequency of vibration of string is given by $f =\frac{p}{2l}\sqrt{\frac{F}{μ}}$. Here $p$ is number of segments in the string and $l$ is the length. The dimension formula for μ will be:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → $[ML^{–1}T^0]$
The dimension of $m=\frac{F}{f^2l^2}=\frac{MLT^{-2}}{T^{-2}L^2}=ML^{-1}$