Question

which three characteristics make a glowing piece of charcoal a blackbody radiator? a. it emits only one frequency of emr. b. it absorbs most of the emr it receives. c. it emits a range of wavelengths of emr. d. the frequencies of emr it emits depend on its temperature.

Explanation:

A black - body radiator absorbs all incident electromagnetic radiation (EMR) and emits a continuous spectrum of wavelengths of EMR. The frequencies (or wavelengths) of the EMR it emits are determined by its temperature according to Planck's law. It does not emit only one frequency of EMR.

Answer:

B. It absorbs most of the EMR it receives, C. It emits a range of wavelengths of EMR, D. The frequencies of EMR it emits depend on its temperature