Railways R.R.C. (Delhi) Solved Paper Held on 1st Shift 23-11-2014

  • question_answer The splitting of different colours of light in prism is called?

    A) Refraction of light           

    B) Diffraction of light

    C) Dispersion of light           

    D) Reflection of light

    Correct Answer: C

    Solution :

    When sunlight passes through a prism, it spits into a group of light of seven colours, which is called spectrum. The phenomenon is called the dispersion of light. Optical fibre works on the principles of total Internal Reflection.

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