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检验滚珠大小的干涉装置如图2.3-5(a)所示。S为光源,L为会聚透镜,M为半透半反镜,在两块光学平面玻璃T1、T2之间放置A、B、C三个滚珠,其中A为标准件,直径为d0。当用波长为λ的单色光照射该装置时,在M上方观察到等厚条纹如图2.3-5(B)所示。轻压C端,条纹间距变大。若B珠直径记为d1、C珠直径记为d2,则它们与d0的关系分别是()。

单选题
2021-12-31 06:02
A、d1=d0+λ,d2=d0+3λ
B、d1=d0-λ,d2=d0-3λ
C、d1=d0+λ/2,d2=d0+3λ/2
D、d1=d0-λ/2,d2=d0-3λ/2
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正确答案
C

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