Use the relation:
speed in a medium = speed of light in a vacuum / refractive index
i.e. v=c/n
Hence
v = 300000000/1.333 = 225060000 m/s
1.5 no units (APEX)
The speed of light in a medium is given by the formula v = c/n, where c is the speed of light in vacuum and n is the refractive index of the medium. Thus, in carbon disulphide with a refractive index of 1.628, the speed of light would be approximately 184,266 km/s.
The equation used to determine the speed of light in a given material is v = c / n, where v is the speed of light in the material, c is the speed of light in a vacuum, and n is the refractive index of the material.
2 (no units)
The index of refraction of a substance is inversely proportional to the speed of light in that substance. This means that as the index of refraction of a substance increases, the speed of light in that substance decreases.
It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".
The refractive index of a solvent can be calculated by measuring the speed of light in that solvent and comparing it to the speed of light in a vacuum. It can also be determined using an Abbe refractometer, which measures the angle at which light bends when passing through the solvent. The formula for refractive index is n = c/v, where n is the refractive index, c is the speed of light in a vacuum, and v is the speed of light in the given solvent.
Also 1.5. That's how the index of refraction is defined.
1.5 no units (APEX)
The property of a material that indicates how much the speed of light changes as it passes through is called the material's refractive index. This index is a measure of how much the speed of light is reduced in a material compared to its speed in a vacuum. The higher the refractive index, the more the speed of light is reduced in that material.
The speed of light in a medium is given by the formula v = c/n, where c is the speed of light in vacuum and n is the refractive index of the medium. Thus, in carbon disulphide with a refractive index of 1.628, the speed of light would be approximately 184,266 km/s.
Refractive Index= Speed of Light in Vaccum / Speed of Light in the material
The refractive index is the ratio of the speed of light in a vacuum to the speed of light in a medium.
The equation used to determine the speed of light in a given material is v = c / n, where v is the speed of light in the material, c is the speed of light in a vacuum, and n is the refractive index of the material.
The ratio of speed of light in a given pair of media , gives us a measure of the extent of refraction of a ray of light as it goes from one medium to another. We use this ratio to define a term called the relative refractive index for a given pair of media . A relative refractive index is light that passes from one transparent medium to another.
I think the property referred to on the question is the refractive index. Refractive index (n) is defined as the ratio of the speed of light in a vacuum (c) to the speed of light in the given material (v).n = c/vSo for glass, with a refractive index of 1.5, the speed of light in the material would be 200,000,000 m/s compared to speed of light in a vacuum of 300,000,000 m/s.
2 (no units)