Sound WavesMedium
Question
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,
Options
A.a high-pressure pulse starts travelling up the pipe, if the other end of the pipe is open.
B.a low-pressure pulse starts travelling up the pipe, if the other end of the pipe is open.
C.a low-pressure pulse starts travelling up the pipe, if the other end of the pipe is closed.
D.a high-pressure pulse starts travelling up the pipe, if the other end of the pipe is closed.
Solution
At the open end, the phase of a pressure wave changes by π radian due to reflection. At the closed end,there is no change in the phase of a pressure wave due to reflection.
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