\(\text { (Third harmonic) }=3 \times v_{0}^{\prime}=3 \times \frac{v}{2 L^{\prime}}\)
First overtone of a closed organ pipe
\(\text { (Third harmonic) }=3 \times v_{0}=3 \times \frac{v}{4 L}\)
According to question,
\(3 v_{0}^{\prime}=3 v_{0} \Rightarrow 3 \times \frac{v}{2 L^{\prime}}=3 \times \frac{v}{4 L}\)
\(\therefore \quad L^{\prime}=2 L\)
$y_1=5 \sin 2 \pi(75 t-0.25 x)$
$y_2=10 \sin 2 \pi(150 t-0.50 x)$
છે. આ બે તરંગોની તીવ્રતાનો ગુણોત્તર $\frac{I_1}{I_2}$ કેટલો છે.