Question 416: Properties of Matter

Question

A person blows into the 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,

Accepted Answer

The high pressure pulse is a compression pulse. When this gets reflected from a rigid boundary (closed pipe), the reflected pressure wave has the same phase as the incident wave i.e., a compression pulse is reflected as a compression pulse. In case of open pipe, there is a phase change of 180$$^\circ$$ when it is reflected by an open end i.e., a compression pulse is reflected as a rarefaction pulse.

Answer

a high-pressure pulse starts travelling up the pipe, if the other end of the pipe is open.

Answer

a low-pressure pulse starts travelling up the pipe, it the other end of the pipe is open.

Answer

a low-pressure pulse starts travelling up the pipe, if the other end of the pipe is closed.

Answer

a high-pressure pulse starts travelling up the pipe, if the other end of the pipe is closed.

Properties of Matter

A person blows into the 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,

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