Answer:
490,671
I think, don't remember what units wavelength are at.
Please check notes or whatever resources and confirm the units below when doing the algebra.
Step-by-step explanation:
Kinda late, but the formulas for light are:
E = hv
c = ^v (supposed to be a symbol I can't make right now)
E = energy
h = Planck's constant (6.626 * 10^-34 J s)
^ = wavelength
v = frequency
c = speed of light constant (2.998 * 10^8 m s^-1)
You want to find frequency, and you have wavelength.
You can use the second equation since c is a constant, and you need/have all the variables.
You can then plug in what you know
2.998 * 10^8 = 611nm * (frequency)
Algebra this monster
490,671.03 or so frequency