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What is the speed of light in a vacuum?

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Question: What is the speed of light in a vacuum?

Options:

  1. 3 x 10^8 m/s
  2. 3 x 10^6 m/s
  3. 3 x 10^5 m/s
  4. 3 x 10^7 m/s

Correct Answer: 3 x 10^8 m/s

Solution: 

The speed of light in a vacuum is approximately 3 x 10^8 m/s.

What is the speed of light in a vacuum?

Practice Questions

Q1
What is the speed of light in a vacuum?
  1. 3 x 10^8 m/s
  2. 3 x 10^6 m/s
  3. 3 x 10^5 m/s
  4. 3 x 10^7 m/s

Questions & Step-by-Step Solutions

What is the speed of light in a vacuum?
  • Step 1: Understand that light travels at a specific speed.
  • Step 2: Know that this speed is measured in meters per second (m/s).
  • Step 3: Recognize that the speed of light in a vacuum is a constant value.
  • Step 4: Learn that this value is approximately 300,000,000 meters per second.
  • Step 5: Write this value in scientific notation as 3 x 10^8 m/s.
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