The diagram below shows two incoming parallel light rays 1 and 2 which pass through a thin converging lens.
Which of the points A, B, C or D will the light ray 3 pass through?
3
2
1
A B
с
D

I'll do it rn and then answer

45 is the correct answer

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.