本题目来源于试卷: Wave Behavior C.3 Refraction Diffraction Superposition Interference，类别为 IB物理学
[单选题]
A parallel beam of light passes through two parallel slits and an interference pattern is formed on a distant screen. The fringe separation is too small to measure. Which of the following would increase the fringe separation?
I. Increase the distance between slits and screen
II. Replace the light source with one with a longer wavelength
III. Increase the slit separation
A. $I$ only
B. $II$ only
C. $I$ and $II$ only
D. $I$ $II$ and $III$
参考答案: C
本题详细解析:
 Therefore, an increase in wavelength and distance between screen and slits will increase fringe separation while the increase in slit separation will result in a decrease in fringe separation.
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