Dr Theodore Maiman's beam of ruby red light is known by the popular name of

Options :
  1. X Ray
  2. Infra Red Ray
  3. Gamma Ray
  4. Laser Beam
Answer and Explanation :-

Answer: Option 4

Explanation:

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If a man is called to be a street sweeper, he should sweep streets even as a Michaelangelo painted, or Beethoven composed music or Shakespeare wrote poetry. He should sweep streets so well that all the hosts of heaven and earth will pause to say, 'Here lived a great street sweeper who did his job well.
-Martin Luther King Jr.