What is the approximate speed of sound in air at room temperature (approximately 20\(°C\))?
343 m/s
The speed of sound in a medium depends on the medium's density and elasticity, and increases with temperature in gases.
At room temperature, approximately 20°C, sound travels through air at about 343 m/s.
Speeds like 1500 m/s and 5000 m/s correspond to sound travelling through water and solids like steel respectively, which are denser and more elastic media, not air.
Hence, the speed of sound in air at room temperature is approximately 343 m/s.
The speed of sound __________ as it passes from solid to gaseous medium.
What minimum distance should the reflecting surface be for an echo to be heard?
In a sound wave traveling through air, which of the following terms refers to a region where the particles are crowded together, resulting in high pressure and high density?
Frequencies higher than the human audible limit of 20,000 Hz are classified as _____.
What happens to the speed of sound as the temperature of the air increases?
In which of the following media does sound move the fastest at a particular temperature?
Which of the following is correct?
I. Sound is a mechanical wave
II. Sound wave does not need any medium to propagate
At a particular temperature, sound propagates in ______ at the fastest speed .
The atmospheric green house effect is produced mainly by the absorption and re-emission of:
Which of the following are examples of electromagnetic waves?
a. Television waves
b. Ultraviolet rays
c. X-rays
d. Sun rays
When light passes from one medium into another medium, then the physical property which does not change is