# The Speed of the Light is Maximum in Which Medium?

By Manesh Singh|Updated : July 22nd, 2022

In Vacuum, the light travel at maximum speed. The speed of light in Vaccum is 3*108. The speed of light depends upon the refractive index of the medium in which it is traveling. The speed of the light in a medium is inversely proportional to the refractive index of the medium.

For example- The lower the refractive index of the medium, the higher the speed of light is, and vice versa. If the medium that the light is traveling is denser, it results in a decrease in the speed of light. It explains why the speed of light is higher in the vacuum medium and lesser in the medium of solid.

Summary:

## The Speed of the Light is Maximum in Which Medium?

The speed of light is maximum in Vacuum. It is denoted by c. The speed of light is followed in such order-

Vacuum> Air> Water> Glass

As the Vacuum is the clearer medium for the light to travel without any hindrances, the speed of light is the most in Vacuum.

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## Speed of the Light is Maximum in FAQs

• The speed of light is maximum in a Vacuum. Vacuums don't have any particles to slow down the speed of light.

• The reason behind this is that if the medium that the light is traveling is denser, it decreases the speed of light.

• The speed of light is denoted by c. The speed of light in a Vacuum is 3*108.

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