Q.
Tuning fork F1 has a frequency of 256Hz and it is observed to produce 6 beats/second with another tuning fork F2. When F2 is loaded with wax, it still produces 6 beats/second with F1. The frequency of F2 before loading was
nA= Known frequency =341Hz,nB= ? x=6 bps, which is decreasing (i.e., x↓) after loading (from 6 to 1 bps) x=6 bps, which remains the same after loading.
Unknown tuning fork F2 is loaded so nB↓
Hence nA−nB↓=x… (i) Wrong nB↓−nA=x… (ii) Correct ⇒nB=nA+x=256+6=262Hz