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Which of the following statements about lasers is correct? Choose all that apply Laser light is monochromatic Laser light is coherent Lasers require a substance

Which of the following statements about lasers is correct?

Choose all that apply

Laser light is monochromatic

Laser light is coherent

Lasers require a substance in which a population inversion can be produced

Lasers are used in many medical procedures

None of the other responses are correct.

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