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      Question

      The first laser was built by Theodore H. in which

      year?
      A 1952 Correct Answer Incorrect Answer
      B 1955 Correct Answer Incorrect Answer
      C 1960 Correct Answer Incorrect Answer
      D 1965 Correct Answer Incorrect Answer

      Solution

      The first laser, which stands for "light amplification by stimulated emission of radiation," was developed in 1960 by Theodore H. It works on the principle of optical amplification using stimulated emission of electromagnetic radiation.

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