everyday science MCQ #48507

What is the speed of light in a vacuum?

everyday science MCQ #48507

  1. Question 1

    Q1. What is the speed of light in a vacuum?

    • A) 3 × 10⁸ m/s
    • B) 3 × 10⁶ m/s
    • C) 3 × 10¹⁰ m/s
    • D) 3 × 10⁴ m/s

    Answer: 3 × 10⁸ m/s

    Explanation: The speed of light in a vacuum is exactly 3 × 10⁸ m/s (approximately 300,000 km/s), making it the fastest possible speed in the universe.