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प्रश्न
What is mean by the reflection of sound?
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उत्तर
Reflection of Sound:
The bouncing of sound waves from the interface between two media is termed as the reflection of sound.
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संबंधित प्रश्न
A certain sound has a frequency of 256 hertz and a wavelength of 1.3 m.
1) Calculate the speed with which this sound travels
2) What difference would be felt by a listener between the above sound and another sound traveling at the same speed, but of wavelength 2.6 m?
A wave passes from one medium to another medium. Mention one property of the wave out of speed, frequency or wavelength which changes.
A wave passes from one medium to another medium. Mention one property of the wave out of speed, frequency or wavelength which does not change.
What is the condition necessary for an echo to be heard distinctly?
Name the principle on which a soundboard works.
Explain how is the principle of echo used by
(a) The bat during its flight at night,
(b) The dolphin to locate small fish as its prey.
Point out the waves from the given list, i.e., light, sound, radio waves, ultrasonic waves, and thermal radiation, the energy is propagated by mechanical waves.
Mention two properties of a wave, one property which varies and the other which remains constant when the wave passes from one medium to another.
How are bats able to fly in the dark?
What are fishing boats?
A cork piece is floating on the surface of the water in a pond. A piece of pebble is dropped into the water. What will be your observation?
In what respect does waveforms of noise and a musical note differ. Draw diagrams to illustrate your answer.
A radio signal, sent towards the surface of the moon, is received in 2.5 seconds. If the speed of the radio waves is 3 × 108 ms−1, find the distance of the moon from the earth.
Match the following:
| 1. | Stethoscope | a. | Repeated reflections |
| 2. | Echogram | b. | Multiple reflections |
| 3. | SONAR | c. | Ultrasonic waves |
| 4. | Reverberation | d. | Speed of underwater objects |
