The Speed of Light in a Material Is 0

question 27

Multiple Choice

The speed of light in a material is 0.50c. What is the critical angle of a light ray at the interface between the material and a vacuum?

• A) 30°
• B) 21°
• C) 24°
• D) 27°

---

Definitions:

Population Growth

The increase in the number of individuals in a population, often influenced by factors such as birth rates, death rates, and migration.

Renewable Resources

Natural resources that can replenish over time, such as sunlight, wind, rain, tides, and geothermal heat.

Fertile Soil

Soil that is rich in nutrients and organic matter, enabling it to support vigorous plant growth.

Natural Gas

A fossil fuel consisting mainly of methane, used as an energy source for heating, cooking, and electricity generation.