A harmonic wave of wavelength travels along a light string toward a junction with a…

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics

Problem

A harmonic wave of wavelength 0.80 m0.80\,\text{m} travels along a light string toward a junction with a heavier string. The wave speed in the light string is 4.0 m/s4.0\,\text{m/s}, while in the heavier string it is 2.0 m/s2.0\,\text{m/s}. Which of the following gives the ratio of the wavelength of the reflected wave in the light string to the wavelength of the transmitted wave in the heavier string? (a) 1:11:1 (b) 2:12:1 (c) 4:14:1 (d) 1:21:2

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