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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2010

  • question_answer
    Two beams of red and violet colours are made to pass separately through a prism of \[A={{60}^{o}}\]. In the minimum deviation position, the angle of refraction inside the prism will be

    A) greater for red colour

    B) equal but not \[{{30}^{o}}\] for both the colours

    C) greater for violet colour

    D) \[{{30}^{o}}\] for both the colours

    Correct Answer: D

    Solution :

    Here, Angle of prism, \[A={{60}^{o}}\] For minimum deviation, \[A=2r\] or            \[r=\frac{A}{2}=\frac{{{60}^{o}}}{2}={{30}^{o}}\]for both colours.


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