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प्रश्न
Can you hear the sound produced due to vibrations of a seconds pendulum? Give reasons.
उत्तर
No, we cannot hear the sound produced due to vibrations of a seconds pendulum because the frequency of sound produced due to vibrations of seconds pendulum is 0.5 Hz which is infrasonic.
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संबंधित प्रश्न
The sketches I to IV in following Figure show sound waves, all formed in the same time interval.
 |
 |
| I | II |
 |
 |
| III | IV |
Which diagram shows
- a note from a musical instrument
- a soft (or feeble) note,
- a bass (low frequency) note.
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Infrasonic sound is of frequency ______________.
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Sonar makes use of :
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An electromagnetic wave has a time period of 4 × 10-8 s. Calculate its frequency in MHz.
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- frequency
- time period.
What are ultrasonic? State and explain two applications of ultrasounds.
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