5 beats/ second are heard when a turning fork is sounded with a sonometer wire under tension, when the length of the sonometer wire is either 0.95 ~m or 1 ~m . The frequency of the fork will be:

Step-by-step solution

Probable frequencies of tuning fork be n 5 Frequency of sonometer wire, n 1 l aligned & n+5 n-5 = 100 95 95(n+5)=100(n-5) & or, 95 n+475=100 n-500 & or, 5 n=975 & or, n= 975 5 =195 ~Hz aligned