engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Thermodynamics Second Law of Thermodynamics and Entropy
A heat pump operating between high temperature T1 and low temperature T2 has its COP expressed as
1
\(\frac{{{T_1}}}{{{T_1} - {T_2}}}\)
2
\(\frac{{{T_2}}}{{{T_1} - {T_2}}}\)
3
\(\frac{{{T_1} - {T_2}}}{{{T_1} + {T_2}}}\)
4
\(\frac{{{T_1} + {T_2}}}{{{T_1} - {T_2}}}\)