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प्रश्न
Waves created by Earth Quake are Infrasonic.
पर्याय
True
False
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उत्तर
Waves created by Earth Quake are Infrasonic - true.
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संबंधित प्रश्न
Fill in the blank.
The number of times a body vibrates in one second is called its ______.
Fill in the blank.
We can hear sounds of frequency in the range of _______
The speed of sound is more in hydrogen than in nitrogen. Is this statement true? Give a reason for your answer.
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 kinds of waves are produced in solids, liquids, and gases?
Can we produce sound in vacuum?
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?
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.
