English

When Acoustic Resonance Takes Place, a Loud Sound is Heard. Why Does this Happen? Explain.

Advertisements
Advertisements

Question

When acoustic resonance takes place, a loud sound is heard. Why does this happen? Explain.

Short/Brief Note
Advertisements

Solution

When acoustic resonance takes place, a loud sound is heard. This is because the natural frequency becomes equal to the frequency of externally applied force hence a loud sound is heard.

shaalaa.com
  Is there an error in this question or solution?

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.


In following figure shows  A, B, C and D are four pendulums suspended from the same elastic string XY. Lengths of pendulum A and D are equal, while the length of pendulum B is smaller and the pendulum C is longer. The pendulum A is set into vibration.
(a) what is your observation? (b) Give reason for your observation.


When a body vibrates under a periodic force, the vibrations of the body are ______.


A tuning fork of frequency 256 Hz will resonate with another tuning fork of frequency:


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.

  1. What is your observation about the vibrations of pendulum D?
  2. Give reason for your observation in part (a).
  3. What type of vibrations take place in pendulums Band C?
  4. Give reason for the answer in part (c).

What is meant by resonance? Give two examples of resonance from daily life.

The diagram below shows three different modes of vibration P, Q and R of the same string of a given length.

P Q R
  1. Which vibration will produce a louder sound and why?
  2. Which vibration will produce sound of maximum shrillness (or pitch) and why?
  3. What is the ratio of wavelength of vibrations P and R?

Explain why does the rear mirror of a motorbike start Vibrating Violently, at some particular speed of motorbike?


Explain a tuning fork (vibrating) is held close to ear. One hears a faint sound. The same vibrating tuning fork is placed on table, such that its handle is in contact with table, one hears a loud sound.


Explain a person walking past a railway line, in the middle of night hears a ringing sound along with the sound of his footsteps.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×