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

  • question_answer
    Why are danger signals usually red?

    A) Our eyes are more sensitive to red colour

    B) The least scattering takes place in red light

    C) Both [a] and [b]

    D) None of the above

    Correct Answer: B

    Solution :

    Danger signals of red colour are used at night. Light of red colour scatters the least. Hence, the signal is visible from a long distance.


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