The speed of light in air or vacuum is 1. 3 × 10^8 M *^-1

Question

Select the correct alternative

The speed of light in air or vacuum is

1. 3 × 108 M *-1

2. 2.25 × 108 m *-1

3. 332 ms-1

4. 2.0 × 108 ms-1

Answer 1

The speed of light in air or vacuum is*3 × 108 M -1**