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[主观题]
一单缝宽度n=1×10-4m,透镜焦距f=0.5m,若用λ=400nm的单色平行光垂直入射,中央明纹的宽度为: A.2×
10-3m B.2×10-4m C.4×10-4m D.4×10-3m
查看答案
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A.2×10-3m
B.2×10-4m
C.4×10-4m
D.4×10-3m
(A) 5.46×10-3m
(B) 5.46×10-2m
(C) 2.73×10-3m
(D) 2.73×10-2m
A.10000
B.4000
C.5000
D.6000