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प्रश्न
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.
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उत्तर
(i) By decreasing the vibrating length of the string,
(ii) By increasing the tension on the string,
(iii) By decreasing the radius of the string.
संबंधित प्रश्न
Resonance is a special case of ______ vibrations, when frequency of the driving force is ______ natural frequency of the body.
Differentiate between the forced and resonant vibrations.
In following figure shows A, B , C and D represent test tube each of height 20 cm which are filled with water up to heights of 12 cm, 14 cm, 16cm and 18cm respectively. If a vibrating tuning fork is placed over the mouth if test tube D, a loud sound is heard.
- Describe the observations with the tubes A, B and C when the vibrating tuning fork is placed over the mouth of these tubes.
- Give the reason for your observation in each case.
- State the principle illustrated by the above experiment.
How do you tune your radio set to a particular station ? Name the phenomenon involved in doing so and define it.
What do you mean by resonance? When does resonance occur?
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?
When a tuning fork, struck by a rubber pad, is held over a length of the air column in a tube, it produces a loud sound for a fixed length of the air column. Name the above phenomenon. How does the frequency of the loud sound compare with that of the tuning fork? State the unit for measuring loudness.
Explain a person walking past a railway line, in the middle of night hears a ringing sound along with the sound of his footsteps.
