The black body always _ radiations
Correct answer: C. both a and b
- A. emit
- B. absorb
- C. both a and b
- D. reflects
Explanation
Black Bodies are ideal entities that have the ability to absorb all forms of radiation that they come across. They can then emit those radiations in a spectrum, Eg; our sun emits radiation in the yellow or green portion of the spectrum.
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About Quantum Theory and Radiation
Quantum theory treats electromagnetic radiation as packets of energy called photons, with energy proportional to frequency through E equals hf. The topic covers Planck's hypothesis, photon momentum, the photoelectric effect, threshold frequency, work function and wave particle duality, distinguishing quantised energy exchange from classical continuous radiation.
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