* Refraction: The bending of light as it passes from one medium to another is called refraction. This happens because light travels at different speeds in different mediums.
* Angle of Incidence and Refraction: The amount of bending (the angle of refraction) depends on the angle at which the light enters the prism (the angle of incidence) and the difference in refractive indices between the two materials (air and the prism).
* Thicker Part = Greater Refractive Index: The thicker part of a prism usually has a higher refractive index than the thinner part. This is because the material is denser in the thicker part.
* Bending Towards the Thicker Part: When light enters a denser medium (the thicker part of the prism), it slows down. This causes the light to bend towards the normal (an imaginary line perpendicular to the surface). Since the thicker part is denser, the light bends more towards it.
In summary: Light rays bend towards the thicker part of a prism because the thicker part has a higher refractive index, causing the light to slow down and bend towards the normal.
