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प्रश्न
Name any two objects which are good reflectors of sound.
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उत्तर
Metal sheet and hardwood are good reflectors of sound as they nearly reflect almost all the sound energy falling on it.
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संबंधित प्रश्न
Name three devices which work on the reflection of sound.
What is the other name of a loud-hailer ?
Fill in the blank with suitable word :
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The speed of sound in water is 1500 metres per second. How far away from an under-sea rock should a deep sea diver be so that he can hear his own echo ?
What is an echo ? How is echo formed ?
Explain by giving a scientific reason.
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An echo returned in 3s. What is the distance of the reflecting surface from the source given that the speed of sound is 330 ms-1?
