How many photons are emitted per second P by a \( 5 \mathrm{~mW} \)...

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How many photons are emitted per second
P by a \( 5 \mathrm{~mW} \) laser operating at \( 620 \mathrm{~nm} \) ?

W
(A) \( 5.3 \times 10^{16} \)
(B) \( 1.56 \times 10^{16} \)
(C) \( 1.56 \times 10^{19} \)
(D) \( 2.52 \times 10^{16} \)
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