Question

Now suppose you have a ray of light that passes through the three following layers: air - water - crown glass (n_crown glass = 1.52). The angle of incidence of the light ray at the air-water-boundary is 30 degree. Calculate the speed of light in crown glass.

Answer 1

The speed of light in crown glass, with an index of refraction of 1.52, is calculated using the formula v = c / n, resulting in approximately 1.974 × 10^8 m/s.

Step-by-step explanation:

To calculate the speed of light in crown glass, we can use the formula that relates the speed of light in a vacuum (c) to the speed of light in a medium (v), which is v = c / n. Here, n is the index of refraction for the medium. For crown glass, the index of refraction (n_crown glass) is given as 1.52.

The speed of light in a vacuum (c) is approximately 3.00 × 108 meters per second (m/s). Therefore, the speed of light in crown glass (v) can be calculated using the equation:

v = c / ncrown glass

Plugging in the given values, we find:

v = (3.00 × 108 m/s) / 1.52

v = 1.974 × 108 m/s

So, the speed of light in crown glass is approximately 1.974 × 108 meters per second.