Q129. The efficiency of the Carnot engine can never be 1, because:Physics — Heat and Thermodynamics — Question 129 of 415A. We can not achieve the higher temperatureB. We do not have an ideal working substanceC. There are always enegy lossesD. We need cold resevoir at absolute zero temperature, which is not availablePractice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →