For a concentrator with concentration C = 100, and incident sunlight at intensity I₀ = 1000W/m², compute the temperature T of the absorber at which solar to electric conversion efficiency is optimized, assuming Carnot efficiency. How does your answer change if the system has an additional rate of energy loss per unit area to conduction and convection of (T − T_ambient) × 20 W/Km², with T_ambient = 300K?