J & K CET Engineering J and K - CET Engineering Solved Paper-2010

  • question_answer
    When sun light is scattered by minute particles of atmosphere, the intensity of light scattered away is proportional to

    A)  \[{{(wavelength\text{ }of\text{ }light)}^{4}}\]

    B)  \[{{(frequency\text{ }of\text{ }light)}^{4}}\]

    C)  \[{{(wavelength\text{ }of\text{ }light)}^{2}}\]

    D)  \[{{(frequency\text{ }of\text{ }light)}^{2}}\]

    Correct Answer: B

    Solution :

    Molecules of a medium after absorbing incoming light radiations, emit them in all directions. This phenomenon is called scattering. According to scientist Rayleigh the intensity of scattered light \[\propto \frac{1}{{{\lambda }^{4}}}\propto {{v}^{4}}\]


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