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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
When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?
Which of the following statement best describes frequency?
Which property of sound leads of the formation of echoes ?
Name three devices which work on the reflection of sound.
Name the device which is used to address a small gathering of people.
The echo of a sound is heard after 5 seconds. If the speed of sound in air be 342 m/s, calculate the distance of the reflecting surface.
A man standing 825 metres away from a cliff (steep rock) fires a gun. After how long will he hear its echo ? Speed of sound in air is 330 m/s.
Answer the following question in your own words.
What is an echo?
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What is an echo? Write the conditions to hear an echo.
