What is the speed of light in a vacuum?
4×108 m/s4 \times 10^8\ \text{m/s}4×108 m/s
2×108 m/s2 \times 10^8\ \text{m/s}2×108 m/s
1×108 m/s1 \times 10^8\ \text{m/s}1×108 m/s
3×108 m/s3 \times 10^8\ \text{m/s}3×108 m/s
Correct Answer: D — 3×108 m/s3 \times 10^8\ \text{m/s}3×108 m/s
Explanation:
The speed of light in a vacuum is approximately 3×108 m/s3 \times 10^8\ \text{m/s}3×108 m/s, a fundamental constant used in many physics equations.
