If the temperature of the black body is doubled then the emitted energy from it will be increased:
Correct answer: D. Sixteen times
- A. Doubled
- B. Four times
- C. Eight times
- D. Sixteen times
Explanation
If the temperature of a blackbody is doubled, then the emitted energy from it will be increased by a factor of 16. This is because the intensity of blackbody radiation is proportional to the fourth power of the temperature.
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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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