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An echo is returned in 3 s. What is the ...

An echo is returned in `3 s`. What is the distance of the reflecting surface from the source, given that the speed of sound is `342 m//s`.

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To find the distance of the reflecting surface from the source when an echo is returned in 3 seconds, we can follow these steps: ### Step 1: Understand the Concept of Echo An echo occurs when sound waves reflect off a surface and return to the source. The total time taken for the sound to travel to the reflecting surface and back is given as 3 seconds. ### Step 2: Use the Formula for Distance The distance traveled by the sound is equal to the speed of sound multiplied by the total time taken. However, since the sound travels to the reflecting surface and back, the distance to the surface (d) is half of the total distance traveled. ...
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Knowledge Check

  • An echo is heard when minimum distance of the reflecting surface is –

    A
    10 cm
    B
    17 m
    C
    34 m
    D
    340 m

  • the minimum distance between the reflecting surface and source for listening the eco of sound is ( take speed of sound 340 m/s )

    A
    34 m
    B
    8.5 m
    C
    17 m
    D
    28 m

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