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प्रश्न
उत्तर
The propagation of wave through a medium due to the repeated oscillatory motion of the particles of the medium about their mean position, the motion being handed over from one particle of the medium to the next particle progressively is referred to as wave motion.
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संबंधित प्रश्न
State two differences between the light and sound waves.
What is a soundboard ? Explain the working of a soundboard with the help of a labelled diagram.
A type of electromagnetic wave has a wavelength of 50 Å. Name the wave and state one use of this type of wave.
Name the type of waves that are used for sound ranging. Why are radio waves not audible to us?
Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?
Explain reflection at the boundary of a rarer medium.
What is meant by an echo? Explain.
Write short notes on reflection of sound waves from plane and curved surfaces.
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 |
