Electromagnetic radiation with a wavelength of 531 nm appears as green light to the human eye.The energy of one photon of this light is 3.74 ×
J.Thus,a laser that emits
Of energy in a pulse of light at this wavelength produces ________ photons in each pulse.
A) 2.9 × 
B) 9.2 × 10-24
C) 1.8 × 
D) 3.5 × 
E) 6.5 × 
Correct Answer:
Verified
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