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प्रश्न
Distinguish between the free (or natural) and forced vibrations.
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उत्तर
| Natural Vibration | Forced Vibration | |
| i. | An object's natural vibrations are its inherent vibrations, which occur at a consistent amplitude and frequency. |
Forced vibrations are those that occur as a result of being subjected to a periodic external force. |
| ii. | The amplitude changes with time. | Amplitude doesn't change throughout time. |
| iii. | The body's intrinsic frequency causes it to vibrate. | Does not move at its own natural frequency, but instead learns to deduce its own. |
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संबंधित प्रश्न
A tuning fork of frequency 256 Hz will resonate with another tuning fork of frequency:
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?
When acoustic resonance takes place, a loud sound is heard. Why does this happen? Explain.
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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.
What do you understand by free (or natural) vibrations?
