explain what is an echo . write the full form of sonar
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an eco is a sound that is repeated as is it sent back from a surface such as the Wall of tunnel .
raghaviscool:
sorry second answer is the.sound navigation and ranging
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The full form of SONAR :Sound Navigation. Ranging.
The phenomenon due to which repetition of sound is heard after reflection from a distant object after the original sound from a given source dies off is called an echo.
The phenomenon due to which repetition of sound is heard after reflection from a distant object after the original sound from a given source dies off is called an echo.
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