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UPSC Physics Heat Question Bank Sound, Oscillations, Heat and Thermodynamics

  • question_answer
          The Visible light has a wavelength range from about 380 nm (violet) to 780 nm (red). If an excited object emits light with wavelength of 15 nm, to which one of the following ranges does it belongs?                            [NDA]

    A) X-ray               

    B)      Gamma ray

    C) Infrared            

    D)      Ultraviolet

    Correct Answer: A

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