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प्रश्न
Why is a loud sound heard at resonance?
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उत्तर
At resonance, the body vibrates with a large amplitude, conveying more energy to the ears, resulting in a loud sound.
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संबंधित प्रश्न
Define the Resonance phenomenon?
The adjacent diagram shows three different modes of vibrations P, Q and R of the same string.
(i) Which vibration will produce a louder sound and why?
(ii) The sound of which string will have maximum shrillness?
(iii) State the ratio of wavelengths of P and R.
Why are the stringed instruments like guitar provided with a hollow sound box?
(i) Define resonant vibrations.
(ii) Which characteristic of sound, makes it possible to recognize a person by his voice without seeing him?
In Fig. A, B, C and D are four pendulums suspended from the same elastic string XY. The lengths of pendulum A and D are equal, while the length of pendulum B is shorter and of the pendulum C is longer. Pendulum A is set into vibrations.
- What is your observation about the vibrations of pendulum D?
- Give reason for your observation in part (a).
- What type of vibrations take place in pendulums Band C?
- Give reason for the answer in part (c).
The diagram below shows three different modes of vibration P, Q and R of the same string of a given length.
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 |
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| P | Q | R |
- Which vibration will produce a louder sound and why?
- Which vibration will produce sound of maximum shrillness (or pitch) and why?
- What is the ratio of wavelength of vibrations P and R?
Explain why are soldiers asked to walk out of step while crossing bridges?
Explain a person walking past a railway line, in the middle of night hears a ringing sound along with the sound of his footsteps.
A string stretched between its ends is made to vibrate by placing the stem of a vibrating tuning fork at its one end. State three ways how you will increase the frequency of note produced by the string.
What are the factors that affect the frequency of a vibrating string and how do they affect the frequency?
