本题目来源于试卷: Wave Behavior C.4 Stand Waves & Resonance，类别为 IB物理学
[单选题]
The string X of lenggxp.y/u. 9a7dmvyx 4v0 xg fmmo5/kq;w8ej+ sth $L_X$ has two fixed ends. The string Y of length $L_Y$ has one free end and one fixed end. Waves travel at the same speed in both strings.
The frequency of the third harmonic of both strings is the same. What is $\frac{L_X}{L_Y}$?
A. 2
B. $\frac{4}{3}$
C. $\frac{3}{4}$
D. $\frac{1}{2}$
参考答案: A
本题详细解析:
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