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प्रश्न
The sound of which of the following frequency is audible to us?
2 Hz, 1000 Hz, 200 kHz, 8 MHz
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उत्तर
The sound of 1000 Hz frequency will be audible to us. Others 2Hz is the infrasonic sound frequency and 200 kHz, 8 MHz is ultrasonic sound frequency.
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संबंधित प्रश्न
How are the wavelength and frequency of a sound wave related to its speed?
Write true or false for a given statement.
Loudness depends on frequency.
| Column A | Column B |
| (a) Vibrations cause | (1) absorb sound |
| (b) A shriller sound is | (2) second |
| (c) Unit of frequency | (3) sound |
| (d) Unit of time period | (4) of high pitch |
| (e) Curtains | (5) hertz |
What are infrasonics? Can you hear them?
What is sound? What type of waves are sound wave in air?
What are longitudinal waves and transverse waves? Explain with the help of labelled diagrams.
State the relation between the wavelength and the frequency.
The distance between three consecutive crests of wave is 60 cm. If the waves are produced at the rate of 180/ min, calculate:
- wavelength
- time period
- wave velocity.
Mention two cases in which there is no Doppler effect in sound?
Note is a sound
