Q 11-14-003NEETNEET 2023Top questionEasy
The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is :
Answer: (B) $2:1$
Concept. Fundamental of an open pipe $f_o = \dfrac{v}{2L}$; of a closed pipe $f_c = \dfrac{v}{4L}$.
Step 1. Ratio.
$$\frac{f_o}{f_c} = \frac{4L}{2L} = 2$$
Answer. $2 : 1$ (Option B).
Solution by Sreeraj P, M.Sc Physics