Which of the following best approximates the energy of a photon whose wave length is 2.0 x 10-9 m?[Planck's constant, h, has a value of 6.6 x 10-34 Js]
A 4x10-51 J
B 1x10-34 J
C 9.9x10-17 J
D 1x1034 J
Solution
Correct Answer: Option C
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