Verified Solution • 2025–26 Session moderate

QPages 62-64: Q8: HC Verma: Concepts of Physics - Volume 2 Laws of Thermodynamics Pages 62-64: Q8 Solution: When a system is taken through the process abc shown in figure, …

When a system is taken through the process abc shown in figure, 80 J of heat is absorbed by the system and 30 J of work is done by it. If the system does 10 J of work during the process adc, how much heat flows into it during the process?

Step-by-Step Verified Solution

**Answer:** Heat flowing into the system during process ADC = 60 J. **Step-by-Step Explanation:** For path ABC: QABC=80Q_{ABC} = 80 J, WABC=30W_{ABC} = 30 J. So ΔUAC=Q−W=80−30=50\Delta U_{AC} = Q - W = 80 - 30 = 50 J. For path ADC: WADC=10W_{ADC} = 10 J. Since ΔU\Delta U is path-independent, ΔUAC=50\Delta U_{AC} = 50 J. QADC=ΔU+W=50+10=60Q_{ADC} = \Delta U + W = 50 + 10 = 60 J.

All Questions in this Chapter

QPage 60: Q1 QPage 60: Q2 QPage 60: Q3 QPage 60: Q4 QPage 60: Q5 QPage 60: Q6 QPage 60: Q7 QPage 60: Q8 QPage 60: Q9 QPage 60: Q10 QPage 60: Q11 QPage 60: Q12 QPage 60: Q13 QPage 60: Q14 QPage 60: Q15 QPage 61: Q1 QPage 61: Q2 QPage 61: Q3 QPage 61: Q4 QPage 61: Q5 QPage 61: Q6 QPage 61: Q7 QPage 61: Q8 QPage 61: Q9 QPage 61: Q10 QPage 61: Q11 QPage 62: Q12 QPage 62: Q13 QPage 62: Q14 QPages 62-64: Q1 QPages 62-64: Q2 QPages 62-64: Q3 QPages 62-64: Q4 QPages 62-64: Q5 QPages 62-64: Q6 QPages 62-64: Q7 QPages 62-64: Q8 QPages 62-64: Q9 QPages 62-64: Q10 QPages 62-64: Q11 QPages 62-64: Q12 QPages 62-64: Q13 QPages 62-64: Q14 QPages 62-64: Q15 QPages 62-64: Q16 QPages 62-64: Q17 QPages 62-64: Q18 QPages 62-64: Q19 QPages 62-64: Q20 QPages 62-64: Q21 QPages 62-64: Q22

Related Learning Resources & Exam Preparation

Chapter Practice Bank
Practice all topic-wise questions from Laws of Thermodynamics
Reference Textbook Solutions
Explore complete chapter exercises for HC Verma: Concepts of Physics - Volume 2
Competitive PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring