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प्रश्न
Name the phenomenon involved in tunning a radio set to a particular station
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उत्तर
The phenomenon involved in tuning a radio set to a particular station is called resonance
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संबंधित प्रश्न
Distinguish between the free (or natural) and forced vibrations.
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.
Differentiate between the following:
Radio waves and light waves.
A bucket kept under a running tap is getting filled with water. A person sitting at a distance is able to get an idea when the bucket is about to be filled.
(i) What change takes place in the sound to give this idea?
(ii) What causes the change in the sound?
Give two examples of forced vibrations.
Explain why are soldiers asked to walk out of step while crossing bridges?
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.
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.
