2004 2003 2002 2001 2000
  (Sub-Topics) Screening (%) Mains(%)
  1. Photoelectric effect 0 8.33
  2. Bohr’s atomic model 3.33 8.33

  3. X-rays 3.33 0
  4. Radioactivity 3.33 0
  5. Nuclear energy. 3.33 0
  Total 13.32 16.66