Advertisements
Advertisements
Questions
Give two differences between music and noise.
Advertisements
Solution 1
| 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). |
Solution 2
- 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.
RELATED QUESTIONS
Write true or false for a given statement.
Larger is the amplitude, feeble is the sound.
Write the audible range of frequency for the normal human ear.
What are ultrasonics? Can you hear the ultrasonic sound?
What type of wave is represented :
(a) by density-distance graph?
(b) by displacement-distance graph?
Distinguish between longitudinal and transverse waves.
The flash of a gun is seen by a man 3 seconds before the sound is heard. Calculate the distance of the gun from the man (Speed of sound in air is 332 m/s).
'Note' is a sound :
In fig. shows a snap shot of a wave from of frequency 50 Hz in a string. The numbers in the diagram represents distance in centimeters. Fpr the wave motion, find
(a) Wavelength,
(b) Amplitude,
(c) Velocity.
In fig. 2 two musical notes of the same pitch and same loudness are played on a violin and on a piano. Their wave forms are as shown in the diagram below. Explain why the wave patterns are different.

In which medium the speed of sound is more: humid air or dry air? Give a reason to your answer.
The speed of light in air is :
Sound is generated by the rhythmic ______ of an object.
Give a scientific reason.
If you were both on the moon, your friend will not be able to hear you call.
Select the correct option:
If the frequency of a wave is 25 Hz. the total number of compressions and rarefactions passing through a point in 1 second is :
What do you understand by the term sound energy?
A person hearing at one end of a long metal bar hears two distinct sounds when the other end is struck with a stone. Explain, giving scientific reasons
An earthquake produces which kind of sound before the mainshock wave begins
