1. | \(100~\text{and}~50\) | 2. | \(44~\text{and}~22\) |
3. | \(80~\text{and}~40\) | 4. | \(72~\text{and}~30\) |
1. | \(275~\text{Hz}\) | 2. | \(175~\text{Hz}\) |
3. | \(525~\text{Hz}\) | 4. | \(575~\text{Hz}\) |
1. | \(\frac{3}{2}\) | 2. | \(\frac{5}{3}\) |
3. | \(\frac{7}{4}\) | 4. | \(\frac{7}{6}\) |
1. | \(10~\text{Hz}\) | 2. | \(20~\text{Hz}\) |
3. | \(30~\text{Hz}\) | 4. | \(40~\text{Hz}\) |
The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe L metre long. The length of the open pipe will be
(1) L
(2) 2L
(3) L/2
(4) 4L