本题目来源于试卷: Wave-EM Wave，类别为 美国物理杯赛(Physics Bowl)
[单选题]
00.07: The length of the m 3cgjxv 89p) /cs)nregost effective 5q17gwul4u-f*l the ea2a6dd transmitting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio stea el7h-du w21*6 fqula4t dg5ation has an antenna 4.5 meters long then what is the broadcast frequency of the radio station?
A. $1.5\times\:10^{-8}Hz$
B. $6.0\times\:10^{-8}Hz$
C. $1.7\times\:10^7Hz$
D. $6.7\times\:10^7Hz$
E. $3.0\times\:10^8Hz$
参考答案: C
本题详细解析:
暂无
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