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What is an Echo - Physics

What is an echo

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Solution

The sound heard after reflection from a distant obstacle after the original sound has ceased is called an echo.

Concept: Distinguishing Different Sounds
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2015-2016 (March) Science Paper 1
Q 8.2
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2015-2016 (March) Science Paper 1 (with solutions)
Q 8.2 | 3 marks
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