Correct option is C
Impedance matching ensures that the characteristic impedance of the source (or first medium) matches that of the load (or second medium).
When impedances are matched:
- Reflections at the boundary are minimized (ideally zero)
- Maximum power/energy is transmitted into the next medium
- Signal integrity is preserved (important in RF, transmission lines, antennas)
Mathematically, the reflection coefficient becomes zero when:
