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The given diagram shows three light pieces of paper placed on a wire that is stretched over two supports, Q and R, a distance 4x apart. When the wire is made to vibrate at a particular frequency, all the pieces of paper, except the middle one, fall off the wire. Which of the following could be the wavelength of the vibration?
A. |
2x |
B. |
3x |
C. |
4x |
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D. |
8x |