Verified Solution • 2025–26 Session moderate

QPages 77-80: Q2: HC Verma: Concepts of Physics - Volume 2 Specific Heat Capacities of Gases Pages 77-80: Q2 Solution: 5 g of a gas is contained in a rigid container and is heated…

5 g of a gas is contained in a rigid container and is heated from 15�C to 25�C. Specific heat capacity of the gas at constant volume is

0.172 \text{ cal g}^{-1} \text{ �C}^{-1}

and the mechanical equivalent of heat is

4.2 \text{ J cal}^{-1}

. Calculate the change in the internal energy of the gas.

Step-by-Step Verified Solution

**Answer:** Change in internal energy = 36.12 J. **Step-by-Step Explanation:** Given:

m = 5

g,

\Delta T = 10�\text{C}

,

c_v = 0.172

cal/g-�C. For rigid container,

W = 0

. So

\Delta U = Q

.

Q = m c_v \Delta T = 5 \times 0.172 \times 10 = 8.6 \text{ cal}

In joules:

\Delta U = 8.6 \times 4.2 = 36.12 \text{ J}

[citation:4].

All Questions in this Chapter

QPage 76: Q1 QPage 76: Q2 QPage 76: Q3 QPage 76: Q4 QPage 76: Q5 QPage 76: Q6 QPage 76: Q7 QPage 76: Q8 QPage 76: Q9 QPage 76: Q10 QPage 77: Q1 QPage 77: Q2 QPage 77: Q3 QPage 77: Q4 QPage 77: Q5 QPage 77: Q6 QPage 77: Q7 QPages 76-77: Q1 QPages 76-77: Q2 QPages 76-77: Q3 QPages 76-77: Q4 QPages 76-77: Q5 QPages 76-77: Q6 QPages 76-77: Q7 QPages 76-77: Q8 QPages 76-77: Q9 QPages 76-77: Q10 QPages 76-77: Q11 QPages 76-77: Q12 QPages 76-77: Q13 QPages 77-80: Q1 QPages 77-80: Q2 QPages 77-80: Q3 QPages 77-80: Q4 QPages 77-80: Q5 QPages 77-80: Q6 QPages 77-80: Q7 QPages 77-80: Q8 QPages 77-80: Q9 QPages 77-80: Q10 QPages 77-80: Q11 QPages 77-80: Q12 QPages 77-80: Q13 QPages 77-80: Q14 QPages 77-80: Q15 QPages 77-80: Q16 QPages 77-80: Q17 QPages 77-80: Q18 QPages 77-80: Q19 QPages 77-80: Q20 QPages 77-80: Q21 QPages 77-80: Q22 QPages 77-80: Q23 QPages 77-80: Q24 QPages 77-80: Q25 QPages 77-80: Q26 QPages 77-80: Q27 QPages 77-80: Q28 QPages 77-80: Q29 QPages 77-80: Q30 QPages 77-80: Q31 QPages 77-80: Q32 QPages 77-80: Q33 QPages 77-80: Q34 QPages 77-80: Q35

Related Learning Resources & Exam Preparation

Chapter Practice Bank

Practice all topic-wise questions from Specific Heat Capacities of Gases

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