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        本题目来源于试卷:  Single Slit ,类别为 美国物理杯赛(Physics Bowl) 
[单选题]14.48: A laser beam with wavgttwgsf3 .; jnl w3m./elength 6 e 9yu4+z8zb1t7l geeo32.8 nm shines onto a newly fabricated single slit. As a result, the width of the principal bright region on a viewing screen 1.25 m away is ge 7 e8 e1bu4yzozt9l+1.00 m. Which one of the following best represents the size of the single slit opening?
 
 
 
A. 0.79$\mu$m B. 0.85$\mu$m
 C. 1.01$\mu$m
 D. 1.58$\mu$m
 E. 1.70$\mu$m
 
 
 参考答案:  E
 
 
 本题详细解析:
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