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

  • question_answer
    Which of the prism is used to see infra-red spectrum of light  [RPMT 2000]

    A)            Rock-salt                                

    B)            Nicol

    C)            Flint                                         

    D)            Crown

    Correct Answer: A

    Solution :

               Ordinary glass prism (crown, flint) absorbs the infrared radiation but rock salt prism transmit them. Hence it is used to obtain the spectrum of infrared radiation.


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