Answer:
1) Total internal reflection
2) Snell's law
Explanation:
As already mentioned in the question, on way of determining the refractive index is to use the idea of total internal reflection. In that case, we measure the critical angle. This is than angle of incidence in the material, for which the angle of refraction is 90°.
n=1/sinC
Alternatively, we could use Snell's law. In this case, we measure the angles of incidence and refraction.
Refractive index= sini/sinr
The two independent methods will be total internal reflection and Snell's law.
"The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant, for the light of a given color and for a given set of media,
According to Snell's law. The formula for Snell's law is
i is the incidence angle
r is the refraction angle.
n is the refractive index of the medium
[tex]\rm n = \frac{sin i}{sinr}[/tex]
One method of finding the refractive index, as described in the question, is to apply the concept of total internal reflection.
In that case, the critical angle is calculated. This is the angle of incidence in the material, with a refraction angle of 90 degrees.
The refractive index is given by;'
[tex]\rm n= \frac{1}{sinc}[/tex]
From snell law;
[tex]\rm n = \frac{sin i}{sinr}[/tex]
The above formula is used to find the index of refraction.
Hence the two independent methods will be total internal reflection and Snell's law.
To learn more about snell's law refer to the link;
https://brainly.com/question/10112549
