Trong thí nghiệm I-âng (Young) về giao thoa ánh sáng, khi chiếu vào hai khe đồng thời hai bức xạ đơn sắc thì ta quan sát được trên màn hai hệ vân giao thoa với các khoảng vân lần lượt là 0,3 mm và 0,2 mm. Khoảng cách từ vân sáng trung tâm đến vân sáng gần nhất cùng màu với nó là:

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Find a mistake in the four underlined parts of the sentence and correct it:

  The term economic reform refers to policies directing by the government to achieve improvements in economic efficiency.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Economic reform usually refers to actions of the government to improve efficiency in economy markets.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Economic reform has dominated Australian economic policy from the early 1980s until the end of the 20^_th century.

• Find a mistake in the four underlined parts of the sentence and correct it:

  The goal of Chinese economic reform was to generating sufficient surplus value to finance the modernization of the mainland Chinese economy.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Economic reforms started since 1986 in Vietnam have helped millions of people to be out of poverty and bringing the poverty rate down.

• Choose the word that has the underlined part pronounced differently from the rest:

  measure                subsidies                 domestic                 hospital

• Choose the word that has the underlined part pronounced differently from the rest:

  economy             industry                qualify                priority

• Choose the word that has the underlined part pronounced differently from the rest:

  right               private                communist               minority

• Choose the word that has the underlined part pronounced differently from the rest:

  though                 encourage                enough                  country

• Choose the word that has the underlined part pronounced differently from the rest:

  improve               introduce                move                    lose