If the speed of light in vacuum is 3 x 10^8 m/s, what is its speed in a medium w

Practice Questions

Q1
If the speed of light in vacuum is 3 x 10^8 m/s, what is its speed in a medium with a refractive index of 1.5?
  1. 2 x 10^8 m/s
  2. 2.5 x 10^8 m/s
  3. 3 x 10^8 m/s
  4. 1.5 x 10^8 m/s

Questions & Step-by-Step Solutions

If the speed of light in vacuum is 3 x 10^8 m/s, what is its speed in a medium with a refractive index of 1.5?
  • Step 1: Identify the speed of light in vacuum, which is 3 x 10^8 m/s.
  • Step 2: Identify the refractive index of the medium, which is 1.5.
  • Step 3: Use the formula to find the speed of light in the medium: Speed of light in medium = Speed of light in vacuum / Refractive index.
  • Step 4: Substitute the values into the formula: Speed of light in medium = (3 x 10^8 m/s) / 1.5.
  • Step 5: Perform the division: 3 x 10^8 m/s divided by 1.5 equals 2 x 10^8 m/s.
  • Step 6: Conclude that the speed of light in the medium is 2 x 10^8 m/s.
  • Refraction and Refractive Index – Understanding how light speed changes when it passes through different media, defined by the refractive index.
  • Speed of Light – Knowledge of the constant speed of light in a vacuum and how it is affected by different materials.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely