the index of refraction essentially compares the velocity of a wave in 2 different medium to the calculate the angle with which the wave will diverge from its original path, so unless u give the other medium your wave is entering the vacuum from the question is nonsensical, hopefully this helped u.
Diamond has the highest index of refraction among vacuum, diamond, air, and crown glass. It has an index of refraction of around 2.42, which is higher than that of air (1.0003), vacuum (1), and crown glass (around 1.5).
Index of refraction can be calculated using the formula n = c/v, where n is the index of refraction, c is the speed of light in a vacuum, and v is the speed of light in the medium. Just divide the speed of light in a vacuum by the speed of light in the medium to find the index of refraction for that medium.
Water's index of refraction is 1.333
Use the definition of "index of refraction". In this case, you simply need to divide the speed of light in a vacuum by the index of refraction.
The refractive index is the ratio of the speed of light in a vacuum to the speed of light in a medium.
The formula for calculating the index of refraction is n = c/v, where n is the index of refraction, c is the speed of light in a vacuum, and v is the speed of light in the medium.
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.
The index of refraction.
Use the definition of "index of refraction". In this case, you simply need to divide the speed of light in a vacuum by the index of refraction.
Also 1.5. That's how the index of refraction is defined.
The index of refraction of a substance is(The speed of light in vacuum) divided by (the speed of light in the substance) .
The index of refraction for glass is calculated by taking the speed of light in a vacuum and dividing it by the speed of light in glass. Since light travels 1.5 times faster in a vacuum, the index of refraction for glass would be 1 divided by 1.5, which equals 0.67.