Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
 Assertion (A): A glass tube partially filled with water represents an open organ pipe. Reason (R): The open end corresponds to an antinode and the end in contact with water, to a node.
In the light of the above statements, choose the correct answer from the options given below:
 1 Both (A) and (R) are True and (R) is the correct explanation of (A). 2 Both (A) and (R) are True and (R) is not the correct explanation of (A). 3 (A) is True but (R) is False. 4 (A) is False but (R) is True.
Subtopic: Â Standing Waves |
Â 60%
From NCERT
NEET - 2024
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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 |
Â 55%
From NCERT
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 |
Â 70%
From NCERT
NEET - 2023
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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 |
Â 53%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
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NEET 2025 - Target Batch

An organ pipe filled with a gas at $$27^\circ \text{C}$$ resonates at $$400$$ 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 $$420$$ Hz 2 $$440$$ Hz 3 $$484$$ Hz 4 $$512$$ Hz
Subtopic: Â Standing Waves |
Â 66%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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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 |
Â 82%
From NCERT
NEET - 2020
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