Question

What is the speed of light:
Open Area=3×10^8 m/s
Water=2.25×10^8m/s
Glass=2×10^8m/s
Is it correct✅
Please answer yes or no.​

Answer 1

Answer:

Speed of light in water = 2.25 × 10^8 m/s. Speed of light in vacuum . Speed of light in vacuum = Speed of light in water × Refractive index of water. Speed of light in vacuum = 3 × 10^8 m/s.

Answer 2

The speed of light is measured to have the same value of c = 3x108 m/s no matter who measures it.

Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive index of 1.3; see Figure 2) and 200,000 kilometers per second in glass (refractive index of 1.5)

200,000 kilometers per second

Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive index of 1.3; see Figure 2) and 200,000 kilometers per second in glass