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12th Class Physics EM Waves

  • question_answer 13)
    Use the formula to obtain the characteristic temperature ranges for different parts of the electromagnetic spectrum. What do the numbers that you obtain tell you?  

    Answer:

                    Using we get for . (a) For  we get . (b) For  we get . (c) For  we get (d) For  we get (e) For  we get The above results tell us the range oftemperature required to obtain the differentparts of the spectrum. For example, toobtain a wavelength of a temperatureof 2900 K is required.  


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