# What is the index of refraction of a material in which the red-light wavelength is 450 nm?

What is the frequency of blue light which has a wavelength of 450
Nope? What is the frequency of red light which has a wavelength of 650
Nope? What is the refractive index of a material in which
wavelength of red light is 450 nm?

Blue light frequency = c/(lambda) =
3*10^(8)/450*10^(-9) = 6.67*10^(14)Hz
Red light frequency = c/(lambda) =
3*10^(8)/650*10^(-9) = 4.617*10^(14)Hz
Refractive index = 1.001
Normally when wavelengths are quoted it is blank.
to get nu = c/lambda.
(a) nu = 3*10^8 m/s / (450nm) = 6.66*10^14 Hz
(b) nu = 3*10^8 m/s / (650nm) = 4.615*10^14 Hz
The refractive index can therefore be written in terms of
wavelengths like:

where is the wavelength of light in
void and is the wavelength of the light in the
medium.
n=(650nm)/(450nm)=1.44
1).
of them).
3). Refractive index,

n = (2)

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