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प्रश्न
What causes sound?
एका वाक्यात उत्तर
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उत्तर
Sound is caused due to vibrations of a body.
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संबंधित प्रश्न
Write true or false for a given statement.
The frequency is measured in hertz.
Name the characteristic which differentiates two sounds of the same pitch and same loudness.
What is the sound level for noise pollution?
Complete the following sentence :
Sound is produced by a ___________ body.
Define sound ranging.
Describe briefly an experiment to prove that vibrating bodies produce sound.
A thin metal plate is placed against the teeth of cog wheel. Cog wheel is rotated at a speed of 120 rotations per minute and has 160 teeth. Calculate:
- frequency of node produced.
- speed of sound, if wavelength is 1.05 m.
- what will be the effect when the speed of cog wheel is doubled?
The sound of which of the following frequency is audible to us?
2 Hz, 1000 Hz, 200 kHz, 8 MHz
Write any two uses of ultrasonic sound.
Find the odd one out.
