Download the solutions for ICSE board class 10 physics Chapter 4 for free here. The exhaustive solutions with illustrative diagrams provided here helps you get a thourough understanding of the concepts discussed in the chapter 4 of class 10 physics ICSE board. When electromagnetic radiation, in the form of visible light, travels from one medium to another, it undergoes a phenomenon known as refraction of light. The process is mainfested by the change in direction or bending of light. The process of refraction occurs only when there is difference in the refractive index of two materials. The chapter discusses refraction of light at plane surfaces in particular. Get the Refraction of light at plane surfaces solutions of class 10 physics for free.