Photon Energy: How much energy is carried by a photon of light having frequency 110 GHz? (h = 6.626 × 10-34 J ? s)
A. 1.1 × 10-20 J
B. 1.4 × 10-22 J
C. 7.3 × 10-23 J
D. 1.3 × 10-25 J
Answer: C
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