2004 2003 2002 2001 2000
  (Sub-Topics) Screening (%) Mains(%)
  1. Reflection on plane mirrors 0 0
  2. Reflection on curved mirrors 3.57 0

  3. Refraction on plane surfaces 0 0
  4. Total internal reflection 0 3.33
  5. Lenses 3.57 0
  6. Prisms 0 6.67
  7. Interference 7.14 0
  Total 14.28 10.00