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Which describes a relationship when calculating the energy of a photon?

The energy of the photon is directly proportional to frequency.
The energy of the photon is inversely proportional to frequency.
As the energy of the photon increases, Planck’s constant increases.
As the energy of the photon increases, Planck’s constant decreases.

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Answered by GPT-5 mini AI
The energy of a photon is directly proportional to its frequency.

Explanation: E = h·f, where E is energy, f is frequency, and h (Planck’s constant) is a fixed constant — it does not increase or decrease with the photon’s energy.