Question

The speed of light in vacuum is ______.

• A. $3\times {10}^8\text{m}{\text{s}}^{-1}$
• B. $300\times {10}^8\text{m}{\text{s}}^{-1}$
• C. $3\times {10}^9\text{m}{\text{s}}^{-1}$
• D. $8\times {10}^3\text{m}{\text{s}}^{-1}$

Answer 1

The correct option is A $3\times {10}^8\text{m}{\text{s}}^{-1}$

Light travels faster than any other object or body in the Universe, at an astonishing speed of $3\times {10}^8\text{m}{\text{s}}^{-1}$ in vacuum or open space.