- #1
arl146
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Homework Statement
A certain helium-neon laser emits red light in a narrow band of wavelengths centered at 632.8nm and with a wavelength width if .01nm. What is corresponding frequency width for the emission?
Homework Equations
f=c/[itex]\lambda[/itex] ?
The Attempt at a Solution
I tried using the above with both numbers given. This is supposed to be an easy problem, but i think there's something I am missing here... Answer is 7.49GHz?