1. Interference and Diffraction – Calculating the effect of slit separation on the fringe spacing in a double-slit experiment. 2. Photoelectric Effect and Energy Levels – Analyzing the relationship between photon energy, work function, and electron emission. 3. Capacitor Charging and Discharging – Determining time constants and voltage changes in an RC circuit. 4. Nuclear Radiation and Decay – Evaluating the activity and decay constant of a radioactive isotope. 5. Circular Motion and Centripetal Force – Calculating orbital velocity and gravitational force for satellites. 6. Thermodynamics and Ideal Gas Laws – Applying kinetic theory to calculate root-mean-square speed of gas molecules.