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WBJEEA person blows into open-end of a long pipe. As a result, a...
A person blows into open-end of a long pipe. As a result, a high pressure pulse of air travels down the pipe.
When this pulse reaches the other end of the pipe,
When this pulse reaches the other end of the pipe,
Solution:
When a sound pulse is reflected from open end of a pipe, phase changes by \(180^{\circ}\). A high pressure pulse i.e., compression is reflected as a low pressure pulse i.e., rarefaction. When sound pulse is reflected through a rigid boundary (closed end of a pipe), no phase change occurs so a high pressure pulse is reflected as a high pressure pulse.
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