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wha is echo
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wha is echo Related: What is Transpiration?, Transportation in Animal...
Echo
When we shout near a mountain, we will hear the same sound again and again with small time interval gaps. This is called an echo. Echoes may be heard more than once due to successive or multiple reections.
The sensation of any sound persist in our ear for about 0.1 s, which means that to hear a clear echo, the reflected sound must be atleast 0.1 seconds after the original sound.
The sensation of any sound persist in our ear for about 1 s
The speed of sound in air at 22 degress is 344m/s
Therefore, Distance = Speed * Time = 344m/s * 0.1 s = 34.4m
That is the full distance ie from the source to the wall and back to the source. So, half the distance ie 2 metres is the minimum distance of the obstacle to hear a clear echo.
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wha is echo Related: What is Transpiration?, Transportation in Animals and Plants, Class 7 Science
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wha is echo Related: What is Transpiration?, Transportation in Animals and Plants, Class 7 Science for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about wha is echo Related: What is Transpiration?, Transportation in Animals and Plants, Class 7 Science covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for wha is echo Related: What is Transpiration?, Transportation in Animals and Plants, Class 7 Science.
wha is echo Related: What is Transpiration?, Transportation in Animals and Plants, Class 7 Science for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about wha is echo Related: What is Transpiration?, Transportation in Animals and Plants, Class 7 Science covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for wha is echo Related: What is Transpiration?, Transportation in Animals and Plants, Class 7 Science.
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