Advertisements
Advertisements
Question
When acoustic resonance takes place, a loud sound is heard. Why does this happen? Explain.
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.
APPEARS IN
RELATED QUESTIONS
In the diagram below, A, B, C, D are four pendulums suspended from the same elastic string PQ. The lengths of A and C are equal to each other, while the length of pendulum B is smaller than that of D. Pendulum A is set into a mode of vibrations.
- Name the type of vibrations taking place in pendulums B and D.
- What is the state of pendulum C?
- State the reason for the type of vibrations in pendulums B and C.
What are mechanical waves?
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. 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.
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.
Explain free and forced vibrations. Give an experimental arrangement to illustrate the phenomenon of resonance.
