问题
多选题
如图为双缝干涉的实验示意图，若要使干涉条纹间距变小，则可采取的措施为
A.改用波长更长的单色光
B.改用频率更高的单色光
C.增大双缝与光屏之间的距离
D.改用间隙更大的双缝
答案
BD
搜题请搜索小程序“爱下问搜题”
如图为双缝干涉的实验示意图，若要使干涉条纹间距变小，则可采取的措施为
A.改用波长更长的单色光
B.改用频率更高的单色光
C.增大双缝与光屏之间的距离
D.改用间隙更大的双缝
BD
| 写作题。 | ||||||||||||
一.请根据下面表格中的内容描述Mary的周末计划。
Mary is going to have a nice weekend. On Saturday morning, she will visit her grandparents. In the afternoon, she is going to 1 and help her mother do some chores. In the evening, she will 2 that is very interesting. On Sunday morning, she will 3 to read some books. In the afternoon, she is going to hang out with her friends and 4 . 1. 2. 3. 4. 二.你也打算过个愉快的周末吧。请仿照上文，根据下面的四幅图片，描述你的计划，文章开头已给出，不必抄写。  I'm going to have a nice weekend. On Saturday morning, I'll visit my uncle. |