您所在的当前位置：高中物理试题 >

波的干涉和衍射

> 以下对波的说法中正确的是　（） A．频率相同的两列波叠加，一定可以发生稳定的干涉现象 B．机械波可以在真空中传播 C．声波是横波 D．波长和障碍物尺寸相近时，衍射现象明显

问题：

发布时间：2024-09-13

以下对波的说法中正确的是　（）

A．频率相同的两列波叠加，一定可以发生稳定的干涉现象

B．机械波可以在真空中传播

C．声波是横波

D．波长和障碍物尺寸相近时，衍射现象明显

参考答案：

提问用户：5h***3DE

可能感兴趣的题目：

1 在研究两个共点力合成的实验中得到如图所示的合力F与两个分力的夹角的关系图．（1）读出两个分力相互垂直是合力的大小．（2）求出两个分力的大小．（3）写出其合力的变化范围．
2 读写任务（共1小题，满分25分）阅读下面的短文，然后按照要求写一篇150词左右的英语短文。 If you like to break things when you are unhappy, the Nanjing Zhonghua Middle School is the school for you. This term, Nanjing Honghua Midlde School will build a "stress wall" to help students who feel unhappy because of schoolwork or for other reasons. Tao Dehua, a leader at the school said the idea of a stress wall started when footprints were found on some newly painted walls and some school windows were broken. "These things happen because some students feel lots of pressure from their studies or because they don"t get along well with other students. When under stress, the body get ready to either run or fight and becomes very nervous. Hitting the wall can help relax the body and take away stress," Tao said. "Tests and homework make me Sad," said Lu Yan, a junior girl."I can"t wait to hit the wall. It will help me a lot with my problems." Another girl student who wouldn"t give her name said that the wall won"t help. "Mainly because it can"t talk," she said. "I need to talk to someone when I"m sad." 【写作内容】 1、以约30个词概括这段短文内容； 2、然后以约120个词就“Should the stress wall be built"这个主题发表你的看法，并包括以下要点： (1)学生的压力来源； (2)是否该建此墙； (3)提供一些其他有效的减压方法。【写作要求】 l、可以参照阅读材料但不得直接引用原文的句子； 2、作文中不得出现真实的姓名和学校名称。【评分标准】概括准确，语言规范，内容合适，篇章连贯。
3 设函数仅有一个负零点，则m的取值范围为（　　　） A．　　　　　　　 B． C．　　　　　　 D．
4 如图，三棱锥中，平面，，，为中点. （1）求证：平面；（2）求二面角的正弦值.
5 在日常生活中，当你打开或者关闭电灯时，你会从旁边工作着的电视机屏幕上看到一条水平线，或者从旁边的收音机中听到“喀喀”的杂音，出现这一现象的原因是（　　） A．电流通断时开关中金属碰撞声的影响 B．电路通断时交流电通过家庭电路对收音机或电视机的影响 C．电流通断时发出的电磁波被收音机、电视机接收到而产生的影响 D．以上原因都不对
6 隋朝建立的时间是 [ ] A．581年 B．589年 C．605年 D．611年
7 已知实数a、b、c满足b+c=6-4a+3a 2，c-b=4-4a+a 2，则a、b、c的大小关系是（　　） A．c≥b＞a B．a＞c≥b C．c＞b＞a D．a＞c＞b
8 阅读理解 Harvard University named historian Drew Gilpin Faust as its first female president on Sunday, ending a lengthy and secretive search to find a successor(接任者)to Lawrence Summers . The seven-member Harvard Corporation elected Faust, a noted scholar on History of the American South and dean of Harvard"s Radcliffe Institute for Advanced Study, as the university"s 28th president. "This is a great day, and a historic day for Harvard." James R. Houghton, chairman of the presidential search committee, said in a statement. "Drew Faust is an inspiring and accomplished leader, a superb scholar, a dedicated(献身的) teacher, and a wonderful human being." Her selection is noteworthy given the heated debates over Summers" comments that genetic differences between the sexes might help explain the lack of women in top science jobs. Faust has been dean of Radcliffe since 2001, two years after the former women"s college was combined into the university as a research center with a mission to study gender issues(性别问题). Some professors have quietly groused that the 371-year-old university is appointing a fifth president who is not a scientist. No scientist has had the top job since James Bryant Conant retired in 1953; its last four have come from the fields of classics, law, literature and economics. Faust is the first Harvard president who did not receive a degree from the university since Charles Chauncy, a graduate of Cambridge University, who died in office in 1762. She attended the University of Pennsylvania. "Teaching staff turned to her constantly," said Sheldon Hackney, a former president of the University of Pennsylvania and historian who worked closely with Faust. "She"s very clear. She has a sense of humor, but she"s very strong-minded. You come to trust in her because she"s so solid." 1. Which might be the best title for the passage? A. Harvard named its 1st female president. B. History of Harvard University changed. C. Debates on female equality ended. D. Drew Gilpin Faust, a famous woman historian. 2. Lawrence Summers held the view that ________. A. women cannot achieve as much as men in management B. women cannot hold important positions in society C. women can match men in science jobs D. few women make top scientists owing to genes 3. The underlined word "groused" in the 6th paragraph means ________. A. approved B. commented C. complained D. indicated 4. This passage probably appears in a ________. A. biography B. personal letter C. research paper D. newspaper
9 　　血液久存后，由______、______、______在血液内形成小的凝集块。血液库存的时间越长，凝集物越多。
10 函数的定义域为Ｒ，则实数ｍ的取值范围是（　　　） A． B． C． D．

以下对波的说法中正确的是 （ ） A．频率相同的两列波叠加，一定可以发生稳定的干涉现象 B．机械波可以在真空中传播 C．声波是横波 D．波长和障碍物尺寸相近时，衍射现象明显

可能感兴趣的题目：

以下对波的说法中正确的是　（）

A．频率相同的两列波叠加，一定可以发生稳定的干涉现象

B．机械波可以在真空中传播

C．声波是横波

D．波长和障碍物尺寸相近时，衍射现象明显