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13 March, 04:10

Two rooms A and B are 12.5m and 25m long in which room u will get the effect echo and why

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  1. 13 March, 04:23
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    B is the room where you will get t he effect of echo.

    Explanation:

    The minimum distance required to get the echo effect is 17.2 m. The echo effect is produced when there is a reflection of sound waves. When you say something, the sound waves leave your mouth. It travels a minimum distance, 17.2 m to produce an echo. It hits a hard surface and hence, it bounces back. These sound waves will come back to your ear. So, you could hear what you said a second ago. The velocity of sound waves in dry air is 343 m at 25 degree Celsius temperature.
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