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Paper 2 · November 2002 · Work, Energy and Power

Give the expression for E, the energy of a photon, in terms of its frequency f and the Planck constant h.

Model answer

E = hf

Also accepted: E=hf, hf

Explanation

The photon energy is E = hf.

Derived from ZIMSEC Physics Paper 2, November 2002, Q7

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