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【单选题】
(ZHCS-A9-5)用波长为400 nm (1 nm=10-9 m)的单色光垂直照射到由两块光学平玻璃构成的空气劈形膜上,在观察反射光的干涉现象中,距劈形膜棱边 = 1.56 cm的A处是从棱边算起的第五条明条纹中心。若改用600 nm的单色光垂直照射到此劈尖上仍观察反射光的干涉条纹,从棱边到A 处的范围内共有( )
A.
3条明纹，3条暗纹
B.
3条明纹，4条暗纹
C.
4条明纹，4条暗纹
D.
4条明纹，5条暗纹
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What is the price, please
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What shall be the fee, please
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