Question

To trace the path of light through a glass prism and to find angle of deviation for different angles conclusion

Answer 1

As the light gets refracted multiple times at various edges, the emergent beam twists at a point to the incident ray .

As an incident angle is expanded, edge of deviation 'd' diminishes and achieves least esteem. In the event that the edge of frequency is additionally expanded, the edge of deviation is expanded.  

At the point when light goes starting with one medium then onto the next medium, it is refracted and enters the new medium at an alternate edge. The level of bowing of the light's way relies upon the edge that the episode light emission makes with the outside of the crystal, and on the proportion between the refractive lists of the two media. This is called Snell's law.