At high temperature, the proportion of _ wavelength radiation increases.
Correct answer: C. Shorter
- A. AM radio
- B. Long radio
- C. Shorter
- D. Both A and C
Explanation
When the temperature of an object is increased it emits light of shorter wavelength according to E=hc/lambda, since the energy of the object increases the wavelength becomes short.
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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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