Question

What do you understand by the statement that refractive index of water is $1.33$?

Answer 1

• Refractive index is also termed as index of refraction.
• The measure of the bending of a ray of light when passing from one medium to another is known as the refractive index.

• The refractive index of water is $1.33$ which means that light travels $1.33$ times as fast in a vacuum as compared to water.
• The statement- "The refractive index of water is $1.33$" indicates that light travels $1.33$ times faster in a vacuum than in water.