Calculate the energy of a photon with a frequency of 5 x 10¹⁴ Hz. (Planck's constant, h = 6.626 x 10^-34 J·s)

• A. 3.313 x 10^-19 J
• B. 2.313 x 10^-19 J
• C. 1.313 x 10^-19 J
• D. 6.626 x 10^-19 J

Answer: (A)