Advertisements
Advertisements
Question
What is the value of sound of room temperature?
Solution
Speed of sound at room temperature is 330 m/s
APPEARS IN
RELATED QUESTIONS
Why are sound waves called mechanical waves?
Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?
How is sound produced ?
A cannon is fired at A (see diagram). An observer at B hears two sounds. The first sound is heard after 1 second and the second 3s after the observer sees the flash. (Velocity of sound = 340 ms−1)
(i) Why does the observer see the flash before he hears the sound?
(ii) Calculate the distance x between the observer and the wall.
Select the correct option:
A part of longitudinal wave in which particles of the medium are farther away than the normal particles is called :
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.
How do the following factor affect the speed of sound in air?
Pressure in air.
The time interval between a lighting flash and the first sound of thunder was found to be 6 s. If the speed of sound in air is 330 ms-1, find the distance of the flash from the observer.
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 list of mediums is given below
- Wood
- Water
- Air
- Vacuum
In which of these mediums can sound travel?
