Refractive Index of a Glass Prism using its Critical Angle

• Crown Prism 60°.
• Metallic Optical bench 60 cm with 4 mounted.
• Scaled Prism holder 360°
• Laser diode 360nm with holder.
• White metallic Screen.


• In this experiment, we can study the critical angle, which is defined that the angle of incidence that provides an angle of refraction of 90-degrees.
• To determine the refractive index of glass prism and we can see the light deviation through the prism and measure.