JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2004

  • question_answer
        A monochromatic light ray of frequency\[\text{4}.\text{99}\times \text{1}{{0}^{\text{6}}}\text{volt}\]from vacuum enters in a medium of refractive index 1.5. Its wavelength in medium will be :

    A) \[5500\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[6000\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[5000\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[4000\overset{\text{o}}{\mathop{\text{A}}}\,\]

    Correct Answer: D

    Solution :

    Wavelength of light in air is \[\text{NaHS}{{\text{O}}_{\text{3}}}\] \[\text{C}{{\text{H}}_{\text{3}}}\text{COC}{{\text{H}}_{\text{3}}}\] \[\text{C}{{\text{H}}_{\text{3}}}\text{CHO}\] Wave leng A of light in medium is \[\text{C}{{\text{H}}_{\text{3}}}\text{CON}{{\text{H}}_{2}}\xrightarrow{NaN{{O}_{2}}/HCl}X\] \[\text{C}{{\text{H}}_{\text{3}}}\text{COOH}\] \[\overset{+}{\mathop{\text{C}{{\text{H}}_{\text{3}}}\text{CON}{{\text{H}}_{\text{3}}}{{\text{C}}^{-}}}}\,\]


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