JEE Main & Advanced Physics Transmission of Heat Question Bank Radiation General Kirchoff's law Black body

  • question_answer
     The cause of Fraunhoffer lines is [RPMT 1996; EAMCET 2001]

    A)            Reflection of radiations by chromosphere

    B)            Absorption of radiations by chromosphere

    C)            Emission of radiations by chromosphere

    D)            Transmission of radiations by chromosphere

    Correct Answer: B

    Solution :

               When the light emitted from the sun?s photosphere passes through it?s outer part Chromosphere, certain wave lengths are absorbed. In the spectrum of sunlight, a large number of dark lines are seen called Fraunhoffer lines.


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