Advertisements
Advertisements
प्रश्न
A vibrating tuning fork, held over an air column of a given length with its one end closed, produces a loud audible sound. Name the phenomenon responsible for it and explain the observation.
Advertisements
उत्तर १
The phenomenon responsible for producing a loud audible sound is named resonance. The vibrating tuning fork causes the forced vibrations in the air column. For a certain length of air column, a loud sound is heard. This happens when the frequency of the air column becomes equal to the frequency of the tuning fork.
उत्तर २
Resonance describes the phenomenon. When the tuning fork frequency is 256 Hz, the loudness of a sound can be either 256 Hz or an integer multiple of 256. i.e., (256 × 1) Hz, (256 × 2) Hz, (256 × 3) Hz, ... or (256 × 5). In other words, the frequency of the tuning fork is 256 Hz, 512 Hz, 768 Hz or 1280 Hz.
APPEARS IN
संबंधित प्रश्न
How does the medium affect the amplitude of free/natural vibrations of a body?
Describe a simple experiment to illustrate the phenomenon of resonance and explain it.
Differentiate between the forced and resonant vibrations.
In following figure shows two tuning forks A and B of the same frequency mounted on two separate sound boxes with their open ends facing each other. The fork A is set into vibration.
- Describe your observation.
- State the principle illustrated by this experiment.
When a troop crosses a suspension bridge, the soldiers are asked to break steps. Explain the reason.
Differentiate between the following:
Radio waves and light waves.
Give two examples of forced vibrations.
A vibrating tuning fork is placed over the mouth of a burette filled with water. The tap is opened and the water level gradually falls. It is observed that the sound becomes the loudest for a particular length of the air column. What is the name of the phenomenon taking place when this happens? Why does the sound become the loudest?
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.
