## What is the best description of a light year?

A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km.

## What is the speed of a light year?

In a vacuum, light travels at mph (1,km/h). To find the distance of a light-year, you multiply this speed by the number of hours in a year (8,766). The result: One light-year equals 5,000 miles (9.5 trillion km).

## Is the speed of light the same as a light year?

The speed of light as a mathematical term is the speed of light through a vacuum. A light year is the distance light would travel at that speed in a year. The speed at which the light travels is called the speed of Light which is 3*10^8 m/sec and the distance travelled by light in one year is called light year.

## Is a shadow faster than the speed of light?

In principle, shadows can move faster than the speed of light. When a shadow is bigger than the object casting it, it moves at a greater distance but in the same amount of time. If the shadow is large enough, it could move across the surface faster than light.

## What will be the Colour of shadow formed in red light?

The shadow is the place where the light doesn’t go. So it doesn’t matter what colorthe light is where it does go, and the shadow is usually described as “black”

## Are shadows cool or warm?

the colour of the object causing the shadow and the surface in shadow. In this reference we can see that: The light source, the sun, is giving a warm light. The shadows are therefore cool.