Which of the following correctly describes Speed of Light?
- A. The fourth planet from the Sun, known as the 'Red Planet' due to iron oxide on its surface
- B. A fundamental physical constant, approximately 299,792 kilometers per second in a vacuum ✓
- C. Cold-blooded vertebrates such as snakes, lizards, and turtles that are typically covered in scales
- D. The smallest planet in the solar system and the closest planet to the Sun
Correct answer
B. A fundamental physical constant, approximately 299,792 kilometers per second in a vacuum
Explanation
'Speed of Light' refers to a fundamental physical constant, approximately 299,792 kilometers per second in a vacuum.