In the \(2^{\text {nd }}\) harmonic the shape of wave looks like.
The point of touching forms a node point of plucking forms an antinode. Hence, for \(2^{\text {nd }}\) harmonic, we need to need wire touched at \(\frac{l}{2}\) and pluck it at \(\frac{l}{4}\).
(વાયુનો અચળાંક $R=8.3 \;JK ^{-1} mol ^{- 1}$ લો)
(હવામાં ધ્વનિનો વેગ $330\;m/sec$ છે)
(બન્ને આદર્શ વાયુઓ ધારો)