When open pipe is closed from one end then third overtone of closed pipe is higher in frequency by 150 ~Hz than second overtone of open pipe. The fundamental frequency of open end pipe will be

Step-by-step solution

3^ rd overtone of closed pipe =7 n _ oc = 7 v 4 2^ nd overtone of closed pipe =3 n ₀₀= 3 v 2 Now, 7 v 4 = 3 v 2 +150 7 v 4 - 3 v 2 =150 7 v-6 v 4 =150 v 4 =150 array ll = & v 4 150 & n₀₀= v 2 = v 4 150 2 v =300 ~Hz array