WBCS.LIVE practice question

What is the approximate speed of light in a vacuum?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. $3 \times 10^8$ m/s
  2. $3 \times 10^5$ m/s
  3. $3 \times 10^{10}$ m/s
  4. $1.5 \times 10^8$ m/s

Correct answer and explanation

Correct answer: $3 \times 10^8$ m/s

Explanation: āœ… Correct Answer: A) $3 \times 10^8$ m/s šŸ“š Explanation: Light travels at a constant speed of approximately 299,792,458 meters per second in a vacuum, often rounded to $3 \times 10^8$ m/s. This speed is considered the universal speed limit according to Einstein's theory of relativity. It takes about eight minutes for light from the Sun to travel the vast distance to the Earth.