本题目来源于试卷: Physics Unit23: Light and Geometric Optics，类别为 通用国际物理
[单选题]
An optic fiber is made of v yvys 5x*eway pfm/z e*6;,+mclear pldu6yc13yz7, 8lwqj 8jldgx;3ctucrg+ i31it astic with index of refraction of 1.50. For what angle of incidence will light remain w rgd;z3 cwduc ty1lic83l+7 xt,ji3g yq86u1jithin the plastic "guide"?
A. $>23.4^{\circ}$
B. $>38.3^{\circ}$
C. $>40.3^{\circ}$
D. $>41.8^{\circ}$
参考答案: D
本题详细解析:
暂无
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