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 refractive index 1.5?
2 x 10^8 m/s
2.5 x 10^8 m/s
3 x 10^8 m/s
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 refractive index 1.5?
Step 1: Identify the speed of light in vacuum, which is given as 3 x 10^8 m/s.
Step 2: Identify the refractive index of the medium, which is given as 1.5.
Step 3: Use the formula for the speed of light in a medium, which is v = c/n.
Step 4: Substitute the values into the formula: v = (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.
Speed of Light in Different Media – Understanding how the speed of light changes when it passes through different materials, specifically using the formula v = c/n.
