Answer:
[tex]1.50[/tex]
Explanation:
Index of refraction:
[tex]n=\frac{c}{v}[/tex] where [tex]n[/tex] is the refractive index, [tex]c[/tex] is the speed of light in vacuum and [tex]v[/tex] is the speed of light in medium.
The speed of light in vacuum is [tex]3.00 \times 10^5 \text{km/s}[/tex]
Speed of light in medium is [tex]2.01 \times 10^5 \text{km/s}[/tex]
Thus,
[tex]n=\frac{3.00\times 10^5}{2.01\times 10^5}[/tex]
[tex]n=1.50[/tex]
Index of refraction of this substance through yellow light is [tex]1.50[/tex]
