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प्रश्न
Explain how the principle of echo is used by the dolphin to locate small fish as its prey.
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उत्तर
Dolphins sends the sound having frequencies between 120 kHz to 150KHz. The returning echoes used to help their prey.
संबंधित प्रश्न
How does a bat make use of ultrasonics waves to find its way?
List the measures that you will take when designing a sound-proof room.
Name the type of waves produced when a tuning fork is struck in air.
What is the nature of sound waves in air?
Explain the terms 'crests' and troughs' of a wave? What type of waves consist of crests and troughs?
We can distinguish between the musical sounds produced by different singers on the basis of the characteristic of sound called :
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Select the correct option:
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What do you mean by an echo?
Sound can travel through solids, gases, liquids, and even vacuum.
Match the following
| 1. | Infrasonic | (a) | Compressions |
| 2. | Echo | (b) | 22 kHz |
| 3. | Ultrasonic | (c) | 10 Hz |
| 4. | High-pressure region | (d) | Ultrasonography |
