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Question

The energy of a photon of light has what kind of proportionality to its frequency and its wavelength?


  1. directly, directly

  2. inversely, inversely

  3. inversely, directly

  4. directly, inversely


Solution

The correct option is D

directly, inversely


The energy is always directly proportional to the frequency while the frequency and wavelength of electromagnetic radiation are always inversely related to each other.

We know from Planck's Quantum Theory
E (Energy of Photon) = hc/λ
or E = h.c.ν

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