Advertisements
Advertisements
प्रश्न
Number of vibrations produced in one second is ______.
Advertisements
उत्तर
Number of vibrations produced in one second is frequency of wave.
APPEARS IN
संबंधित प्रश्न
How does a man’s voice differ from a woman’s voice ?
What are wavelength, frequency, time period and amplitude of a sound wave?
In which medium the speed of sound is more: humid air or dry air? Give a reason to your answer.
The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the time period.
What is the ratio of speed of light to speed of sound?
Distinguish between light and sound waves. What are the consequences of the large difference in the speed of sound and that of light? Briefly explain them.
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
Match the following.
| Ultrasonics | Frequency below 20Hz |
| Speed of sound in air | Needs material medium |
| Infrasonics | 330ms-1 |
| Sound propagation | Frequency more than 20000 Hz |
Mention two cases in which there is no Doppler effect in sound?
