Question

what is the speed of light in water ?????​

Answer 1

Answer:

225,000 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 (refractive index of 1.5).

Answer 2

$\huge\tt{\underline{Question : }}$

what is the speed of light in water ?????

$\huge\tt{\underline{Answer :- }}$

• Refractive index = Speed of light in vaccum / Speed of light in water.
• It is denotes as n = c / v, v = c / n= 3 × 10^8 m/s / (1.33) = 2.25 × 10^8 m/s.
• Therefore, refractive index of the water can be measure by the Speed of light in water is 2.25 × 10^8 m/s.

Light speed in water is 225,000,000 m/s and in vacuum, 300,000,000 m/s.