engineering recuitment BEL Probationary Engineers Mock Test 2025 Thermodynamics Second Law of Thermodynamics and Entropy
A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature of source be increased for the same sink, to increase its efficiency by 50% of original efficiency?
1
150 K
2
250 K
3
300 K
4
450 K