Planck's constant is h = 6.6 * 10-34 Js.Light of wavelength 5 * 10-7 m consists of photons whose energy is
A) 1.1 * 10-48 J.
B) 1.3 * 10-27 J.
C) 4 * 10-19 J.
D) 1.7 * 10-15 J.
Correct Answer:
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