Light of wavelength 550 nm illuminates a double slit, and the interference pattern is observed on a screen.
1. At the position of the m =2 maximum (bright fringe), how much farther is it to the more distant slit than to the nearer slit?
2. At the position of the m= 2 minimum (dark fringe), how much farther is it to the more distant slit than to the nearer slit?

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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.