The energy of a quantum of radiation is directly proportional to its
Correct answer: B. frequency
- A. wavelength
- B. frequency
- C. speed
- D. amplitude
Explanation
Energy equals Planck's constant multiplied by frequency, so higher frequency means more energetic quanta, and since frequency and wavelength are inversely related, energy falls as wavelength rises. This is why ultraviolet is damaging and infrared is not. Amplitude governs the number of photons, that is the intensity, rather than the energy of each.
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About Planck's Quantum Theory
Planck's quantum theory states that energy is emitted or absorbed in discrete packets called quanta, with each packet having energy E = hν. It covers the meaning of Planck's constant, the relationship between frequency and wavelength, and how quantisation differs from the classical continuous model of energy.
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