A person blows into open- end of a long pipe. As a result,a high pressure pulse of air travel down the pipe. When this pulse reaches the other end of the pipe,A. a high-pressure pulse starts traveling up the pipe, if the other end of the pipe is open.B. a low-pressure pulse starts traveling up the pipe, if the other end of the pipe is open.C. a low-pressure pulse starts traveling up the pipe, if the other end of the pipe is closed.D. a high-pressure pulse starts traveling up the pipe, if the other end of the pipe is closed.

A person blows into open- end of a long pipe. As a result,a high press

1.	A person blows into open- end of a long pipe. As a result,a high pressure pulse of air travel down the pipe. When this pulse reaches the other end of the pipe,A. a high-pressure pulse starts traveling up the pipe, if the other end of the pipe is open.B. a low-pressure pulse starts traveling up the pipe, if the other end of the pipe is open.C. a low-pressure pulse starts traveling up the pipe, if the other end of the pipe is closed.D. a high-pressure pulse starts traveling up the pipe, if the other end of the pipe is closed.
Answer» Correct Answer - B::D At open end phase of pressure wave charge by `pi` so compression returns as rarefraction. While at closed end phase of pressure wave does not change so compression return as compression.

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