Q. Why laser is used in the pipe alignment?

  • (A) They are directional in nature
  • (B) They are monochromatic
  • (C) They are coherent
  • (D) None of the above
✅ Correct Answer: (A) They are directional in nature

Published by Ravi Chauhan ⭐ 11.26K Points at 18-Oct-2021 06:11 am in Physics

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