Multiple Choice
Electromagnetic radiation with a wavelength of 471 nm appears as blue light to the human eye. The energy of one photon of this light is 4.22 × J. Thus, a laser that emits
of energy in a pulse of light at this wavelength produces ________ photons in each pulse.
A) 1.5 ×
B) 1.2 × 10-23
C) 3.2 ×
D) 3.1 ×
E) 6.5 ×
Correct Answer:

Verified
Correct Answer:
Verified
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