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Each Photon in a Beam of Light Has an Energy

Question 17

Multiple Choice

Each photon in a beam of light has an energy of 4.20 eV.What is the wavelength of this light? (c = 3.00 × 108 m/s,h = 6.626 × 10-34 J ∙ s,1 eV = 1.60 × 10-19 J)


A) 321 nm
B) 103 nm
C) 296 nm
D) 412 nm
E) 420 nm

Correct Answer:

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