Refraction of Light

• Apparatus: Ray Box, Rectangular piece of glass, Plain paper, Pencil.
• Procedure:

  • Place the Plain paper below the rectangular piece of glass.
  • Project a ray towards the glass.
  • Make two points to mark the incident ray, two to mark the refracted ray and two to mark the emergent ray.
  • Join all the lines, measure the angles and calculate refractive index.
  • Repeat with different angles; Snell's law shown.