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प्रश्न
How do the following factor affect the speed of sound in air?
Temperature of air
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उत्तर
The speed of sound increases with the increase in temperature of the gas.
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संबंधित प्रश्न
A musician recognizes the musical instrument by hearing the sound produced by it, even without seeing the instrument. Which characteristic of sound makes this possible ?
Distinguish between compression and rarefaction.
Match the pairs.
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (1) Frequency less than 20 Hz |
| (b) Frequency | (2) Frequency more than 20000 Hz |
| (c) Sound level | (3) Vibrations in the air |
| (d) Ultrasonic sound | (4) Measured in Hz |
| (e) Infrasonic sound | (5) Decibel |
What causes sound in air?
he sound of an explosion on the surface of a lake is heard by a boatman 120 m away and by a diver 120 m below the point of explosion. Out of the two persons, who would hear the sound first? Why?
Is sound a form of energy?
What is the effect of temperature and pressure on the speed of sound in a gas?
Write any two uses of ultrasonic sound.
What are the uses of infrasonic sound?
