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 beam of parallel ligh5w5pww ynrg8bohk h;7 -)uv1i -za5p3 ynwoaw sj.:8wt with a wavelength of $λ$ is incident on a narrow slit. A diffraction pattern is formed on a distant screen. The angle of diffraction between the central maximum and the first minimum is $θ$. What would be the angle of the first diffraction minimum for the light with a wavelength of $3λ$?
A. 3 θ
B. 2 θ
C. θ
D. $\frac{3}{ θ}$
参考答案: A
本题详细解析:
| 
