Question

What is the speed of light in air ?

• A. 3 ×10^8 m/s
• B. 3 ×10^10 m/s
• C. 3.5 ×10^8 m/s
• D. 4 ×10^9 m/s

Answer 1

Answer:

A. 3 ×10^8 m/s

the speed of light in air is 3 ×10^8 m/s.