engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Thermodynamics First Law of Thermodynamics
A system is taken from the state a to state c by two paths adc and abc as shown in the figure. The internal energy at a is Ua = 10 J. Along the path adc the amount of heat absorbed δQ1 = 50 J and the work done δW1 = 20 J whereas along the path abc the heat absorbed δQ2 = 36 J. The amount of work done along the path abc is
1
6 J
2
10 J
3
12 J
4
36 J