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AP Physics 2
14.3 Boundary Behavior of Waves and Polarization
14.1 Properties of Wave Pulses and Waves
IntermediateMCQProportional AnalysisConceptual25.5k
A horizontal composite string stretched tightly between two rigid outer walls under uniform tension. The string consists of three connected sections: Segment 1 on the left is drawn as a thin line labeled \(\mu_1 = \mu\); Segment 2 in the middle is drawn as a noticeably thicker line labeled \(\mu_2 = 4\mu\); Segment 3 on the right is drawn as a very thin line labeled \(\mu_3 = \frac{1}{4}\mu\). On Segment 1, an upright single Gaussian wave pulse is shown traveling to the right toward the boundary with Segment 2. A straight horizontal arrow labeled \(v_0\) is positioned directly above the pulse, pointing rightward. No other labels, lines, text, or axes appear.
Composite string composed of three distinct segments under tension.
A string consists of three segments connected in series under a uniform tension \(T_T\): Segment 1 has linear mass density \(\mu_1 = \mu\), Segment 2 has \(\mu_2 = 4\mu\), and Segment 3 has \(\mu_3 = \frac{1}{4}\mu\). An upright wave pulse with frequency \(f_0\) and wavelength \(\lambda_0\) travels to the right in Segment 1 toward Segment 2. Which of the following correctly pairs the orientation of the pulse reflected back into Segment 1 at the boundary between Segment 1 and Segment 2 with the wavelength \(\lambda_2\) of the pulse transmitted into Segment 2?

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