A laser emits a single,3.0-ms pulse of light that has a frequency of 2.83 × 10¹¹ Hz and a total power of 65 000 W.How many photons are in the pulse?
A) 6.0 × 10²³
B) 1.2 × 10²⁴
C) 2.4 × 10²⁵
D) 3.6 × 10²⁵
E) 4.8 × 10²⁶
Correct Answer:
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