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HC Verma - Concepts of Physics Part 1

16. Sound Waves

1. Introduction to Physics
2. Physics and Mathematics
3. Rest and Motion : Kinematics
4. The Forces
5. Newton’s Laws of Motion
6. Friction
7. Circular Motion
8. Work and Energy
9. Centre of Mass, Linear Momentum, Collision
10. Rotational Mechanics
11. Gravitation
12. Simple Harmonic Motion
13. Fluid Mechanics
14. Some Mechanical Properties of Matter
15. Wave Motion and Waves on a String
16. Sound Waves
17. Light Waves
18. Geometrical Optics
19. Optical Instruments
20. Dispersion and Spectra
21. Speed of Light
22. Photometry

Short Answer

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Objective I

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Objective II

Exercises

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Q. 47

Two successive re

Class 11th HC Verma - Concepts of Physics Part 1 16. Sound Waves

Answer :

Given:
Velocity of sound in air

Let be the length of the resonating column.

Then, the frequencies of the two successive resonances will be:

And .

As per the question,

So,

Hence, the length of the tube is 25 cm.

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