which statement correctly compares the speed of light?\nthe speed of light through space is much greater…

which statement correctly compares the speed of light?\nthe speed of light through space is much greater than 3 x 10^8 m/s.\nthe speed of light in glass is much greater than 3 x 10^8 m/s.\nthe speed of light in glass is faster than the speed of light through space.\nthe speed of light in glass is slower than the speed of light through space.

which statement correctly compares the speed of light?\nthe speed of light through space is much greater than 3 x 10^8 m/s.\nthe speed of light in glass is much greater than 3 x 10^8 m/s.\nthe speed of light in glass is faster than the speed of light through space.\nthe speed of light in glass is slower than the speed of light through space.

Answer

Explanation:

Step1: Recall the speed of light in vacuum

The speed of light in a vacuum (space) is approximately (c = 3\times10^{8}\text{ m/s}).

Step2: Consider the speed of light in a medium

When light travels through a medium like glass, it interacts with the atoms of the medium. The refractive index (n) of a medium is given by (n=\frac{c}{v}), where (c) is the speed of light in vacuum and (v) is the speed of light in the medium. Since (n> 1) for glass ((n_{glass}\approx1.5)), then (v=\frac{c}{n}<c).

Answer:

The speed of light in glass is slower than the speed of light through space.