| Inertial and non-inertial frames | Michelson- Morley experiment |
| Einsteins postulates | Lorentz transformation equations |
| Length contraction | Time dilation |
| Addition of velocities |
| Spontaneous & stimulated Emission | Population inversion |
| Concept of 3 and 4 level Laser | He-Ne lasers |
| Fiber Optics | Acceptance angle |
| Space lattice | Lattice parameter |
| Seven crystal systems | Crystal System Structure |
| Packing factor | Reciprocal Lattice |
| Laue’s experiment |
| Dielectric Properties | Dielectric constant |
| Types of Polarization | Dielectric Losses |
| Magnetic Properties | para and ferro magnetism |
| Langevin’s theory for diamagnetic material |
| What is Black Hole |