Question

What is difference between refraction and deviation

Answer 1

All dispersive materials will refract light. The key difference between the two is that dispersion is referring to the frequency dependence (which is the ability to separate different colors of light) while refraction is referring to the bending of light in a material.

Answer 2

Refraction is the change in the path of light when it enters into any medium and deviation is amount of deflection in the path of light when it travels from rarer to denser medium