s 1. What are the different ways that electron-hole recombination can occur? 2. Does the room light affect the measurements? 3. Does the recombination lifetime vary with the strobe rate? If so, why? 4. Derive the equation for the voltage across the series resistor, as a function of the time. 5. Why is the time required for the pulse to fall to 20% of the maximum value 1.61 ? How many time constants are required to fall to 95% of the maximum value? Which method would you use and why