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

  • question_answer
          Refractive index of an optical medium changes with                        [NDA]
    1. the nature of the medium.
    2. the change in the angle of incidence of the ray.
    3. colour of the incident ray. 
    Select the correct answer using the code given below:

    A) 1 and 3 only     

    B)      2 and 3 only

    C) 1 and 2 only     

    D)      1, 2 and 3

    Correct Answer: D

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