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Question
Why is a loud sound heard at resonance?
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Solution
At resonance, the body vibrates with a large amplitude, conveying more energy to the ears, resulting in a loud sound.
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RELATED QUESTIONS
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.
What are forced vibrations?
Why are the stringed instruments like guitar provided with a hollow sound box?
In fig. shows two tuning forks P and Q of the same frequency mounted on separate sound boxes with their open ends facing each other. The fork A is set into vibration. (i) Describe your observation. (ii) State the principle illustrated by this experiment.
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.
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- Give reason for your observation in part (a).
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- Give reason for the answer in part (c).
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