Trong thí nghiệm Y-âng về giao thoa ánh sáng, hai khe được chiếu bằng ánh sáng đơn sắc có bước sóng λ = 0,48 μm, khoảng cách giữa hai khe là 0,6 mm. Khoảng vân trên màn quan sát đo được là 1 mm. Từ vị trí ban đầu, nếu tịnh tiến màn quan sát một đoạn x lại gần mặt phẳng chứa hai khe thì khoảng vân mới trên màn là 0,8 mm. Giá trị của x bằng:

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Một số câu hỏi khác có thể bạn quan tâm.

• Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions:

  The shoplifter immediately admitted to her crime to the security guard.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions:

  The Bali Tiger was declared extinct in 1937 due to hunting and habitat loss.         

• Mark the letter A,B,C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.  

  I knew he was only flattering me because he wanted to borrow some money.         

• Mark the letter A,B,C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.  

  The kidnapper gave himself up to the authorities.         

• Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions:

  A wedding is a meaningful event.         

• Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions:

  She was a devoted teacher. She spent most of her time teaching and taking care of her students.         

• Mark the letter A, B, C or D to indicate tho word/phrases SIMILAR in moaning to the underlined word(s) in each of the following questions:

  Chimpanzees are frequently used as stand-ins for human beings in experiments.         

• Mark the letter A, B, C or D to indicate tho word/phrases SIMILAR in moaning to the underlined word(s) in each of the following questions:

  The cake was heavenly so I asked for more.  

• Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions:

  If people’s interference with the environment decreases, more species will survive and produce offspring.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions:

  Animals on earth fascinate us with their beauty, their grace and their speed.