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प्रश्न
What do you mean by reflection of sound? State one condition for the reflection of a sound wave. Name a device in which reflection of sound wave is used.
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उत्तर
- The term "reflection of a sound wave" refers to the return of a sound wave in the same medium when it strikes a surface like a wall, metal sheet, plywood, etc.
- A reflecting surface's size needs to be greater than the sound wave's wavelength in order for a sound wave to reflect.
- A megaphone (also known as a speaking tube), a sound board, and an ear trumpet are examples of devices that exploit sound wave reflection.
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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?
State two factors on which the speed of a wave travelling in a medium depends.
What is the shape of a soundboard kept behind the speaker on the stage of a big hall ?
Draw a labelled diagram to show the multiple reflections of sound in a part of the stethoscope tube.
Write the approximate value of the speed of sound in water.
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?
Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?
What is meant by an echo? Explain.
