Advertisements
Advertisements
प्रश्न
What causes sound?
Advertisements
उत्तर
Sound is caused due to vibrations of a body.
संबंधित प्रश्न
Fill in the blank.
We can hear sounds of frequency in the range of _______
Which wave property determines loudness?
A stone is dropped on the surface of water in a pond. Name the type of waves produced.
Define the term wave velocity. Write its S.I. unit.
An observer sitting in line of two tanks watches the flashes of two tanks firing at each other at the same time, but he hears the sounds of two shots 2s and 3.5s after seeing the flashes. If distance between the two tanks is 510m, find the 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.
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 |
A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through ______.
