\(n_A \)= Unknown frequency \(= ?\)
\(n_B\) = Known frequency \(= 256 Hz\)
\(x = 3 bps,\) which remains same after loading
Unknown tuning fork \(A\) is loaded so \(nA\downarrow \)
Hence \( n_A\downarrow-n_B = x\) ... (i) \(\rightarrow\) Correct
\(n_B -n_A\downarrow = x\) ... (ii) \(\rightarrow\) Wrong
\(\rightarrow\) \( n_A = n_B + x = 256 + 3 = 259 Hz.\)
(હવામાં ધ્વનિની ઝડપ $340\, {ms}^{-1}$)