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jarek102
2 năm trước
Khoảng cách giữa hai khe Si và S2 trong máy giao thoa bằng 1 mm, khoảng cách từ màn tới hai khe là 3 m. Khoảng cách giữa hai vân sáng liên tiếp trên màn 1,5 mm. Vân sáng bậc hai và vẫn tối thứ năm ở cùng một phía so với vẫn trung tâm cách nhau A.3,75 mm B.3,5 mm C. 4 mm. D. 4,25 mm.
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