PYQ NEET- Oscillations And Waves L-6

Question: The $4^{\text {th }}$ overtone of a closed organ pipe is same as that of $3^{\text {rd }}$ overtone of an open pipe. The ratio of the length of the closed pipe to the length of the open pipe is :#

A) $8: 9$

B) $9: 7$

C) $9: 8$

D) $7: 9$

Answer: $9: 8$#