SSC Sample Paper SSC (Group-C) Sample Test Paper-1

  • question_answer
    Infrared radiations are detected by

    A)  Pyrometer

    B)  Nanometer

    C)  Photometer  

    D)  Spectrometer

    Correct Answer: C

    Solution :

     A photometer is an instrument that can be used for absorption, emission or fluorescence measurement with ultraviolet, visible or infrared radiation. It has filters for wavelength selection and a photoelectric device for measuring radiation (Detection and Analysis by E. N. Rams-den).


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