The wavelength of visible light ranges from 400 nm to 700 nm.
A. Find the ranges of this light's frequency.
Fmin ____ Hz ,Fmax ____ Hz
B. Find the ranges of this light's angular frequency.
wmin _____rad/s, wmax _____ rad/s
c. Find the ranges of this light's wave number.
kmin_____ rad/m, kmax_____ rad/m