A ruby laser delivers a 10 ns pulse of 1 MW average power. If all the photons are of the same wavelength 694.3 nm, how many photons are contained in the pulse?

A ruby laser delivers a 10 ns pulse of 1 MW average power. If all the

1.	A ruby laser delivers a 10 ns pulse of 1 MW average power. If all the photons are of the same wavelength 694.3 nm, how many photons are contained in the pulse?
A.	3.5 × 1016
B.	6.2 × 1016
C.	2.6 × 1015
D.	4.0 × 1014
Answer» B. 6.2 × 1016

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A ruby laser delivers a 10 ns pulse of 1 MW average power. If all the photons are of the same wavelength 694.3 nm, how many photons are contained in the pulse?

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