A helium-neon laser emits red light having a wavelength of 632.8 nm and a power of 0.5 mW. How many photons are emitted each second?

A helium-neon laser emits red light having a wavelength of 632.8 nm an

1.	A helium-neon laser emits red light having a wavelength of 632.8 nm and a power of 0.5 mW. How many photons are emitted each second?
A.	2.6 × 1018
B.	4.8 × 1017
C.	3.3 × 1016
D.	1.6 × 1015
Answer» E.

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A helium-neon laser emits red light having a wavelength of 632.8 nm and a power of 0.5 mW. How many photons are emitted each second?

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