1476. The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is September 7, 2025 by Admin 11.2 kW/m² 12.0 kW/m² 14.6 kW/m² 16.5 kW/m² ✅ The correct answer is option D.
