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Question

Which phenomenon is responsible for the echo of sound wave?

This question was previously asked in
SSC CGL 2016 (Tier 1) Previous Year Question Paper (11-Sep-2016) (Shift 2)
The correct answer is

Reflection

The phenomenon responsible for the echo of sound waves is Reflection. When sound waves hit a surface and bounce back, they create an echo.
Hence, the correct answer is Option 1.

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