Bức Xạ Có Bước Sóng = 0,6m | Cungthi.online

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• Bức xạ có bước sóng = 0,6m

Câu 1: Bức xạ có bước sóng = 0,6m A. thuộc vùng ánh sáng nhìn thấy. B. là tia hồng ngoại. C. là tia tử ngoại. D. là tia X.

Những câu hỏi này đến từ bài kiểm tra này. Bạn có muốn thực hiện bài kiểm tra thử không?

Bài tập trắc nghiệm 15 phút Tia hồng ngoại và tia tử ngoại - Vật Lý 12 - Đề số 6

• 15 phút
• 11 câu hỏi

Làm bài kiểm tra

Một số câu hỏi từ cùng một bài kiểm tra

• Tia tử ngoại được dùng
• Bức xạ có bước sóng = 1,0m
• Trong chân không, bức xạ nào sau đây là bức xạ tử ngoại?
• Bức xạ có bước sóng trong khoảng từ 10-9m đến 4. 10-7m thuộc loại nào trong các loại sóng dưới đây?
• Tìm phát biểu sai về tia tử ngoại ?

• Dựa vào tác dụng nào của tia tử ngoại mà người ta có thể tìm được vết nứt trên bề mặt sản phẩm bằng kim loại?         

• Khi nói về tia gamma và tia tử ngoại, phát biểu nào sau đây sai ?

• Tia tử ngoại được ứng dụng để:

• Tia tử ngoại được dùng:         

• Bức xạ có bước sóng = 0,6m

• Tia hồng ngoại có bước sóng nằm trong khoảng nào sau đây?         

Một số câu hỏi khác bạn có thể quan tâm

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

  It is common knowledge that the Internet, often called simply Net, is the largest network of computers in the world. It connects businesses, institutions and individuals. One of its main uses is communication, and electronic mail, or e-mail, is probably the most popular use of the Internet. Although the Net is widely used by people of all ages, many adults are now concerned about is possibly harmful effects on young people.

   example, chatting is a popular activity on the Net. Electronic chat rooms are Internet sites where people can communicate directly with one another. These chat rooms are quite popular with children. However, adults with inappropriate or illegal motives may also join chat rooms. Sometimes these adults try to arrange face-to-face meetings with unsuspecting victims. There have cases where children have been tricked by adults who pass them off as children and who give information that provokes to be entirely false.

  Another cause of worry for parents is the huge amount of information accessible to users of the Internet. Not all information on the Net is accurate, and some deliberately misleading. In addition, parents worry that children may be exposed to harmful material. For instance, there are innumerable sites where explicitly violent or pornographic scenes are shown. Moreover, many organizations maintain hate sites that present racist or politically extreme views.

  The Internet has tremendous potential for good, but it has also led to some serious questions about appropriate use. Where protection of their children is needed, parents should not hesitate to intervene. Unlimited freedom on the Net can lead to serious, sometimes dangerous, consequences.

  The author generally believes that children _____.

• Choose the word which has the underlined part pronounced differently from the rest.

• A business person travels more expensively than a tourist.

  A tourist travels ______________________________________________________

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

  A generation gap in the workplace can make workers both young and old feel inferior, as well as hamper productivity and teamwork. Differences between generations can be seen in work ethics, habits and communication styles. Younger workers might fear not being taken seriously by their older colleagues, while older workers might fear that their experience is not valued but replaced by workers with knowledge of more current technology. However, members of each generation can close the gap between them if they're willing to meet one another halfway.

  Older workers can show respect to the younger set by asking for their opinions and recognizing their contributions to the workplace as valid, or complimenting them on a job well done. Younger workers can show their elders respect by asking for advice on how to manage a situation with work, based on the older worker's many years of experience. It's important for both entry- and senior-level workers to see each other as equals, regardless of the type of position in which they work. No one wants to feel inferior or irrelevant just because of their age. Rather, a generation gap at work can be a learning opportunity.

  Workers can also put themselves in their colleagues' shoes to determine what might be bothering them about their generational age difference. If a person is much older than another, perhaps it is bitterness about fewer job opportunities, or fear that a younger worker might seem more relevant and edge him out of his job. If workers open their minds to understand where co-workers are coming from, it can help ease any tension between them and appreciate each other's work contributions.

  If age seems to be a problem for someone at the workplace, it can be helpful to do the very opposite of what a co-worker might expect from someone of a different age set due to stereotypes. For example, if a worker is considerably younger such as right out of college, she can share researched information to indicate that she knows what she's doing, or show curiosity instead of upset to indicate emotional maturity if the person makes a disparaging remark about her youth. Older workers can maintain an enthusiastic attitude about work instead of showing boredom or bitterness from past experiences.

  Workers can, moreover, directly address the concern of age differences at work with the colleague at odds with them by asking the person for constructive advice on how to handle the issue. For example, older workers who are unfamiliar with new software that younger colleagues understand might acknowledge to them that they did the same tasks differently in years past but show interest in learning the program to keep up with modern technology. Learning to speak their technological language can make them feel more connected. Likewise, a younger worker can admit to being green on the work scene, but eager to gain experience by learning from senior colleagues.

  What is the purpose of writer in the passage?

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

  You should take regular exercises instead of sitting in front of the television all day.

• Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

  In the school education system in Vietnam, ____  and kingdergarten belong to pre- school stage.