What is the energy of a photon of wavelength ? (use , answer in eV)
Answer and explanation
Correct answer: C. 4
- Step 1: Apply the Planck-Einstein photon energy relation: .
- Step 2: Using standard convenience units with and wavelength : .
- Step 3: Evaluate the photon energy: .
Answer
4.
Why not the others: The alternative options (8, 310, 1/4) result from neglecting fundamental physical conservation laws, misapplying physical constants, or arithmetic calculation slips.
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