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प्रश्न
Complete the following sentences :
Sound cannot travel through __________, but it requires a ___________.
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उत्तर
Sound cannot travel through Vacuum, but it requires a medium .
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संबंधित प्रश्न
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
Write true or false for a given statement.
A ticking clock sound is heard late when heard through a metal.
What type of waves are illustrated by the movement of a rope whose one end is fixed to a pole and the other end is moved up and down?
Are sound waves longitudinal or transverse?
What is sound? What type of waves are sound wave in air?
What do you mean by the audible range of frequency?
State three conditions necessary for hearing sound.
State the relation between the wavelength and the frequency.
A continuous disturbance is created on the surface of water in a ripple tank with a small piece of cork floating on it. Describe the motion of the cork. What does the motion of the cork tell about the disturbance?
Match the following.
| Ultrasonics | Frequency below 20Hz |
| Speed of sound in air | Needs material medium |
| Infrasonics | 330ms-1 |
| Sound propagation | Frequency more than 20000 Hz |
