A series of pulses are sent down a string that is attached rigidly to a pole at

Question

A series of pulses are sent down a string that is attached rigidly to a pole at one end such that they are reflected by the pole and sent back down the string traveling in the opposite direction. If the amplitude of each pulse is the same and equal to .30m, what is the resulting amplitude where two pulses traveling in opposite directions meet, and what type of interference is it?

A) 0 m; destructive interferance B) .60 m; constructive interferance C) .60m; destructive interferance D) .42m; constructive interferance

Explanation / Answer

when two pulse travelling in oppsite direction will meet than destructive interference will occur becuase they are travelling in opposite direction and their magnitude is same so final amplitude will be zero. becuase both amplitude will cancel out each other

Ans A) 0 m; destructive interferance

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