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The speed of light is a set speed at which all electromagnetic waves travel at in a vacuum. It is 3*10^8 meters/second... That being said, when light, or any other EM wave, travels through a medium it will slow down. Every material has an index of refraction which is the ratio of the speed at which light travels in a vacuum, to the the speed it travels in that material. If you know the index of refraction, you can use Snell's law to determine the speed light will travel through a specific medium. Every medium is different, however a rule of thumb is the denser the medium, the slower light will travel through it. For example, light travels faster in the atmoshpere than it does in water.

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The colour of light which travels through glass with the minimum speed is?

The color of light that travels through glass with the minimum speed is violet. This is because the speed of light in any medium, including glass, is dependent on the medium's refractive index, with shorter wavelengths like violet experiencing a slower speed.


Why is the speed of light medium?

The speed of light is not medium: in vacuum, it is the highest speed that there can be. Hardly a definition of medium!


Speed of light will be minimum when it passes through?

The speed of light is constant and does not change based on the material it passes through. However, when light enters a medium such as glass or water, its speed decreases due to interactions with the atoms in the material.


Is speed of light in vacuum and medium same?

No, light in a medium will travel at a slower speed.


Where will be speed of light minimum-water or air or vacuum or glass?

The speed of light is minimum in Glass. It is because light travels at minimum speed in solids.


How is the index of refraction of a medium related to the speed light of in the medium?

c divided by the index of refraction of the medium = the speed of light in the medium.


Speed of light is minimum in?

the velocity of light is maximum in vacuum I.e 3*10^8 m/s. as the density of the medium increases the velocity of light decreases in the medium. so the velocity of light is less in watt than in atmosphere. the thicker the medium is the slower the electromagnetic wave, so the velocity of light will be minimum in the thickest medium.


What is the speed of light in vacuum to the speed of light in medium yield?

That quotient is the refractive index of that medium.


The ratio of the speed of light in a medium to the speed of light in a vacuum is called its?

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".


What the value of the index of refraction of a medium?

It's the speed of light in vacuum divided by the speed of light in that medium.


Is the speed of light in a medium affected by the velocity of the light as it enters a new medium?

No. The speed of light is determined by the electrical characteristics of the medium it's in, regardless of what medium it came from or what medium it's headed for when it leaves this one.


Why speed of light is greater than speed of sound?

The speed of light is the speed at which electromagnetic waves propagate through a medium. The speed of sound is the speed at which acoustic waves propagate through a medium. As the speed of sound relies on the medium moreso than the speed of light, sound propagates much slower than light.