JEE Main & Advanced Physics Question Bank Prism Theory and Dispersion of Light

  • question_answer
    Colour of the sky is blue due to [CPMT 1996, 99; AFMC 1993; AIIMS 1999;  AIEEE 2002; BCECE 2003; BHU 2004]

    A)            Scattering of light               

    B)            Total internal reflection

    C)            Total emission                     

    D)            None of the above

    Correct Answer: A

    Solution :

               Intensity of scattered light \[I\propto \frac{1}{{{\lambda }^{4}}}\],  since lblue is least that's why sky looks blue.


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