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JEE Main & Advanced Sample Paper JEE Main Sample Paper-37

  • question_answer
    A glass prism is immersed in a hypothetical liquid. The curves showing the refractive index n as a functions of wavelength \[\lambda \]for glass and liquid are as shown in the figure. A ray of white light is incident on the prism parallel to the base. Choose the incorrect statement-

    A) yellow ray travels without deviation

    B) blue ray is deviated towards the vertex

    C) red ray is deviated towards the base

    D) there is no dispersion

    Correct Answer: D

    Solution :

    n for liquid = n for glass for yellow light But n for liquid < n for glass (red light) \[\therefore \] deviated towards base Similarly, n for liquid > n for glass (blue light) \[\therefore \] deviated towards vertex.


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