Page 4 - Lesson note refraction of light
P. 4

The refractive index of a medium helps to know the light-bending ability of that

               medium.


               Effects of refraction of light

              It is due to refraction of light that when we hold a stick obliquely and partially
               immersed in water it appears to be bend at the surface of water.





















              An object appears to be raised when paced under water.

              Pool of water appears less deep than it actually is.
              If a lemon is kept in a glass of water it appears to be bigger when viewed from the

               sides of glass.

               It is due to refraction of light that stars appear to twinkle at night.







































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