Advertisements
Advertisements
Question
Advertisements
Solution
Sounds can be roughly divided into two categories: (i) music, and (ii) noise.
Regularity, contrivity and rapidity make musical sounds different from a noise. The distinction between music and noise is not very sharp; it is subjective.
| Music | Noise |
| 1. It is pleasant, smooth and agreeable to the ear. | 1. It is harsh, discordant and displeasing to the ear. |
| 2. It is produced by the vibrations which are periodic. | 2. It is produced by an irregular succession of disturbances. |
| 3. All the component waves are similar without any sudden change in their wavelength and amplitude | 3. The component wave chanqes their character suddenly and they are of short duration.. |
| 4. The sound level is low (below 30 dB). | 4. The sound level is hiah (above 120 dB). |
APPEARS IN
RELATED QUESTIONS
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.
Why are the stringed instruments like guitar provided with a hollow sound box?
How do you tune your radio set to a particular station ? Name the phenomenon involved in doing so and define it.
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 stringed musical instruments, like the guitar, are provided with a hollow box.
The rearview mirror of a motorbike starts vibrating violently at some particular speed of the motorbike, what could be done to stop the violent vibrations.
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.
