In vacuum, the speed of all types of electromagnetic radiation is equal to ………….
A. 3.0 × 106 m s-1
B. 3.0 × 108 m s-1
C. 3.0 × 1010 m s-1
D. 3.0 × 1012 m s-1
Answer:B
In vacuum, the speed of all types of electromagnetic radiation is equal to ………….
A. 3.0 × 106 m s-1 B. 3.0 × 108 m s-1 C. 3.0 × 1010 m s-1 D. 3.0 × 1012 m s-1