Which of the following is not a part of the optical spectrum? ∙ A. infrared ∙ B. ultraviolet ∙ C. visible color ∙ D. x-rays

Which of the following is not a part of the optical spectrum?
∙ A. infrared  
∙ B. ultraviolet
∙ C. visible color
∙ D. x-rays
by

1 Answer

Answer :

∙ D. x-rays
by

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