3.1         Measurements and their errors

3.1.1      Use of SI units and their prefixes

3.1.2      Limitation of physical measurements

3.1.3      Estimation of physical quantities

3.2         Particles and radiation

3.2.1      Particles

3.2.1.1   Constituents of the atom

3.2.1.2   Stable and unstable nuclei

3.2.1.3   Particles, antiparticles and photons

3.2.1.4   Particle interactions

3.2.1.5   Classification of particles

3.2.1.6   Quarks and antiquarks

3.2.1.7   Application of conservation laws

3.2.2      Electromagnetic radiation and quantum phenomena

3.2.2.1   The photoelectric effect

3.2.2.2   Collision of electrons with atoms

3.2.2.3   Energy levels and photon emission

3.2.2.4   Wave-particle duality