Advertisements
Advertisements
प्रश्न
Give two differences between music and noise.
उत्तर १
| 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 changes 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). |
उत्तर २
- Music:
- The sound provides a pleasing sensation to the ear.
- It is produced by the regular patterns of vibrations.
-
Noise:
- Sound that is unpleasant to the ear
- It is produced by irregular and non-periodic vibrations.
संबंधित प्रश्न
A person is listening to a tone of 500 Hz sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source?
Define time period ?
How does a bat make use of ultrasonics waves to find its way?
List the measures that you will take when designing a sound-proof room.
What are wavelength, frequency, time period and amplitude of a sound wave?
Name the two types of waves which can be generates in a long flexible spring (or slinky).
Draw displacement-time graph of a wave and show on it the amplitude and time period of wave.
Give a scientific reason.
If you were both on the moon, your friend will not be able to hear you call.
What kinds of waves are produced in solids, liquids, and gases?
On placing your ear close to an iron railing which is tapped some distance away, sound is heard twice. Explain, why?
What is the ratio of speed of light to speed of sound?
How do the following factor affect the speed of sound in air?
Pressure in air.
Can you hear the sound produced due to the vibrations of second's pendulum?
What is sound? Explain with example how does sound travel in a medium.
Define one hertz.
Describe with diagram, how compressions and rarefactions are produced.
The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?
Two observers are stationed in two boats 4.5 km apart. A sound signal sent by one, under water, reaches the other after 3 seconds. What is the speed of sound in the water?
Find the odd one out.
