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प्रश्न
Name any two objects which are good reflectors of sound.
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
Does sound follow the same laws of reflection as light does? Explain.
The minimum distance between the source and the reflector in air. So that an echo is heard is approximately equal to ______.
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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.
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Answer the following question in your own words.
What is an echo?
What are the medical applications of echo?
What is an echo? Write the conditions to hear an echo.
Answer the following question in your own words.
What factors are important to get a distinct echo?
