Trong một thí nghiệm iâng sử dụng một bức xạ tử ngoại có bước sóng lamda =0.275 um. Khoảng cách giữa hai khe S1,S2 là a=3mm.Màn hứng vân giao thoa là một phim ảnh đặt cách S1,S2 một khoảng D=45cm.sau khi tráng phim thấy trên phim có 1 loạt các vạch đen song song cách đều nhau .Tìm khoảng cách từ vạch thứ nhất đến vạch thứ 10

Các câu hỏi liên quan

VI. Make sentences using the words and phrases given. 1. Another problem/ the increase/ the number/ cars/ the road. ........................................................................................................................ 2. There/ transport rules/ but/ many people/ not seen/ really interested/ follow/them. ........................................................................................................................ 3. The traffic/ worst/ rush hours/ when/ everyone/ try/ get to work/ get home quickly. ........................................................................................................................ 4. Some people/ ride/ motorbikes/ the pavements/ rather than/ waiting/ a traffic jam. ........................................................................................................................ 5. The traffic/ a nightmare/ visitors/ Viet Nam/ the first time. ........................................................................................................................ 6. More people/ own/ private cars/ it/ make/ the problem/ the traffic jams/ worse. ........................................................................................................................ 7. Pedestrians/ get injured/ hit easily/ when/ they/ walk/ the pavements/ cross the roads/ such times. ........................................................................................................................ ........................................................................................................................ 8. Road users/ very impatient/ quite aggressive/ constantly using their horns/ even shouting/ others. ........................................................................................................................ 9. Three or four people/ one motorbike/ a common sight/ particularly/ young people. ........................................................................................................................ 10. Some people/ install/ air horn/ their motorbikes/ this/ really annoying/ other people/ sometimes/ it cause/ accidents. ........................................................................................................................ ........................................................................................................................