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UPSC Physics Electric Current and Magnetism Question Bank Electricity, Magnetism and Light

  • question_answer
          When light waves travel from air to glass, which variables are affected?                                  [NDA]

    A) Wavelength, frequency and velocity

    B) Velocity and frequency only

    C) Wavelength and frequency only

    D) Wavelength and velocity only

    Correct Answer: D

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