Theory of Light
     What Is Light
      Electromagnetic -
      Spectrum

      Light Wave Theory
      Speed of Light

  Property And Nature
  of Light

     Reflection
      Refraction
      Refractive Index
      Diffraction
      Interference
      Polarisation

  Lenses and Simple
  Optics
   
 Lenses
      Positive Lenses

      Negative Lenses