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प्रश्न
Which property of sound leads of the formation of echoes ?
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उत्तर
Echoes are formed due to reflection of sound waves.
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संबंधित प्रश्न
Which of the following statement best describes frequency?
Name the device which is used to address a small gathering of people.
What is meant by 'reflection of sound' ? What type of surfaces are the best for reflecting sound ?
Explain by giving a scientific reason.
We cannot hear the echo produced in a classroom.
Answer the following question in your own words.
What should be the dimensions and the shape of classrooms so that no echo can be produced there?
What is the minimum distance needed for an echo?
State two conditions necessary for hearing an echo.
What are the medical applications of echo?
To hear an echo, the minimum distance of the obstacle from the source of sound must be ______.
Assertion: The sound which we hear again is called Echo.
Reason: The sensation of sound (Echo) persists in our brain for about 1 s.
