What is a laser?

Environmental Engineering Mcqs
BILAL KHATTAK0

A.Electro-magnetic waves
B.Ultrasonic waves
C.Supersonic waves
D.Light amplification by stimulated emission of radiation

Related Mcqs:

  1. Laser is an acronym for light amplification by
  2. The atmospheric greenhouse effect is produced mainly by the __________?
  3. A fathometer works on the principle of
  4. LED stands for?
  5. Laser is a device to produce
  6. A geodimeter is based on the principle of
  7. A photochemical reaction is
  8. How many stimuli from a different source fall on our eye:
  9. The wavelength of which of the following is the largest?
  10. Which of the following has a wavelength shorter than that of violet light?

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