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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
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 ______.
Why are the ceilings of concert halls made curved ? Draw a labelled diagram to illustrate your answer.
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.
What is an echo?
State two conditions necessary for hearing an echo.
How can you calculate the speed of sound using echo?
______ allows bats to navigate through dark caves and find insects for food.
______ is an image obtained by the use of reflected ultrasonic waves.
Assertion: The sound which we hear again is called Echo.
Reason: The sensation of sound (Echo) persists in our brain for about 1 s.
