What Is the Energy (In EV) of an Optical Photon $6.43 \times 10^{14} \mathrm {~Hz}$

question 148

Multiple Choice

What is the energy (in eV) of an optical photon of frequency $6.43 \times 10^{14} \mathrm {~Hz}$ (h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

• A) 2.66 eV
• B) 1.62 eV
• C) 1.94 eV
• D) 3.27 eV

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