試卷名稱:110年 - 110 國立臺灣大學_碩士班招生考試_物理系天文物理所與應用物理所(三所聯招):近代物理學(A)#113053
年份:110年
科目:研究所、轉學考(插大)-近代物理學
10. In the Davisson-Germen experiment, a beam of 60 eV electrons is directed at a crystal, and diffracted electrons are found at an angle θ = 74° relative to the original beam. What is the spacing of the atomic planes of the crystal?
(A) 0.1 nm
(B) 0.5 nm
(C) I nm
(D) 2 nm
(E) 5 nm.