- 1(current)
Q. No.The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is:
| 1. | \(3:1\) | 2. | \(1:2\) |
| 3. | \(2:1\) | 4. | \(1:3\) |
Subtopic: Â Standing Waves |
 65%
Level 2: 60%+
NEET - 2023
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The \(4^\mathrm{th}\) overtone of a closed organ pipe is the same as that of the \(3^\mathrm{rd}\) overtone of an open pipe. The ratio of the length of the closed pipe to the length of the open pipe is:
| 1. | \(8:9\) | 2. | \(9:7\) |
| 3. | \(9:8\) | 4. | \(7:9\) |
Subtopic: Â Standing Waves |
 75%
Level 2: 60%+
NEET - 2023
Hints
A string of length \(l\) is fixed at both ends and is vibrating in second harmonic. The amplitude at antinode is \(2\) mm. The amplitude of a particle at a distance \(l/8\) from the fixed end is:
| 1. | \(2\sqrt2~\text{mm}\) | 2. | \(4~\text{mm}\) |
| 3. | \(\sqrt2~\text{mm}\) | 4. | \(2\sqrt3~\text{mm}\) |
Subtopic: Â Standing Waves |
 55%
Level 3: 35%-60%
NEET - 2022
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An organ pipe filled with a gas at \(27^\circ \text{C}\) resonates at \(400~\text{Hz}\) in its fundamental mode. If it is filled with the same gas at \(90^\circ \text{C},\) the resonance frequency at the same mode will be:
| 1. | \(420~\text{Hz}\) | 2. | \(440~\text{Hz}\) |
| 3. | \(484~\text{Hz}\) | 4. | \(512~\text{Hz}\) |
Subtopic: Â Standing Waves |
 70%
Level 2: 60%+
NEET - 2022
Hints
The length of the string of a musical instrument is \(90\) cm and has a fundamental frequency of \(120\) Hz. Where should it be pressed to produce a fundamental frequency of \(180\) Hz?
| 1. | \(75\) cm | 2. | \(60\) cm |
| 3. | \(45\) cm | 4. | \(80\) cm |
Subtopic: Â Standing Waves |
 84%
Level 1: 80%+
NEET - 2020
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The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is \(20~\text{cm}\), the length of the open organ pipe is:
| 1. | \(13.2~\text{cm}\) | 2. | \(8~\text{cm}\) |
| 3. | \(12.5~\text{cm}\) | 4. | \(16~\text{cm}\) |
Subtopic: Â Standing Waves |
 65%
Level 2: 60%+
NEET - 2018
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The two nearest harmonics of a tube close at one end and open at the other end are \(220~\text{Hz}\) and \(260~\text{Hz}\). What is the fundamental frequency of the system?
| 1. | \(10~\text{Hz}\) | 2. | \(20~\text{Hz}\) |
| 3. | \(30~\text{Hz}\) | 4. | \(40~\text{Hz}\) |
Subtopic: Â Standing Waves |
 65%
Level 2: 60%+
NEET - 2017
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An air column, closed at one end and open at the other, resonates with a running fork when the smallest length of the column is 50 cm. The next larger length of the column resonating with the same tunning fork is
1. 1OO cm
2. 150 cm
3. 200 cm
4. 66.7cm
Subtopic: Â Standing Waves |
 76%
Level 2: 60%+
NEET - 2016
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The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe \(L\) meter long. The length of the open pipe will be:
| 1. | \(L\) | 2. | \(2L\) |
| 3. | \(\dfrac{L}{2}\) | 4. | \(4L\) |
Subtopic: Â Standing Waves |
 79%
Level 2: 60%+
NEET - 2016
Hints
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- 1(current)
Q. No.
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