Railways General Science & Technology Wave Optics / तरंग प्रकाशिकी Sample Paper Wave Optics Sample Test Paper-7

  • question_answer
    Infrared radiation is detected by

    A)  Spectrometer

    B)  Pyrometer

    C)  Nanometre

    D)  Photometer

    Correct Answer: B

    Solution :

    [b] Infrared radiation is detected by pyrometer.


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