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प्रश्न
What is the vacuum? Explain why, sound cannot travel through vacuum?
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उत्तर
Vacuum is an empty space that is devoid of matter. Sound wave is an example of mechanical wave that requires material medium for its propagation. Thus, sound waves cannot travel through vacuum.
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संबंधित प्रश्न
You recognize your friend by hearing his voice on a telephone. Explain.
Which of the following can produce longitudinal waves as well as transverse waves under different conditions?
Complete the following sentences :
Sound cannot travel through __________, but it requires a ___________.
What is the audible range of frequency for human?
Select the correct option:
In case of longitudinal waves, the particles of the medium vibrate:
What do you mean by an echo?
High-frequency sounds that cannot be heard by you are called _______.
Match the following
| 1. | Infrasonic | (a) | Compressions |
| 2. | Echo | (b) | 22 kHz |
| 3. | Ultrasonic | (c) | 10 Hz |
| 4. | High-pressure region | (d) | Ultrasonography |
