The speed of light in a vacuum is approximately how many kilometers per second?
A
300,000 km/s
B
1,000,000 km/s
C
150,000 km/s
D
500,000 km/s
Correct Answer: Option A — 300,000 km/s
Explanation:
The speed of light in a vacuum is approximately 300,000 kilometers per second, a fundamental physical constant that plays a crucial role in the theory of relativity and modern physics.