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प्रश्न
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 |
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उत्तर
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (3) Vibrations in the air |
| (b) Frequency | (4) Measured in Hz |
| (c) Sound level | (5) Decibel |
| (d) Ultrasonic sound | (2) Frequency more than 20000 Hz |
| (e) Infrasonic sound | (1) Frequency less than 20 Hz |
संबंधित प्रश्न
The flash of a gun is seen by a man 3 seconds before the sound is heard. Calculate the distance of the gun from the man (Speed of sound in air is 332 m/s).
Select the correct option:
In the region of compression or rarefaction, in a longitudinal wave, the physical quantity which does not change is:
How do the following factor affect the speed of sound in air?
Moisture in air.
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.
Explain how the principle of echo is used by
The dolphin to locate small fish as its prey.
High-frequency sounds that cannot be heard by you are called _______.
When a sound wave travels through air, the air particles ______.
An earthquake produces which kind of sound before the mainshock wave begins
The speed of sound in air at 0°C is ______.
