The three types of radiation placed in order of increasing frequency are … a) gamma rays, radio waves, infrared radiation b) radio waves, x-rays, infrared radiation c) radio waves, microwaves, ultraviolet rays d) cosmic rays, infrared radiation, microwaves e) visible light, x-rays, radio waves

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Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.