In a measurement of quantum efficiency of photosynthesis in green plants, it was found that 10 quanta of red light of wavelength 6850 Å were needed to release one molecule of O2. The average energy storage in this process for 1 mole O2 evolved is 112 Kcal. What is the energy conversion efficiency in this experiment? Given: 1 cal =4.18 J, NA = 6 × 1023,h = 6.63 × 10^−34 J.s