Verified Solution • 2025–26 Session moderate

QPages 12-14: Q10: HC Verma: Concepts of Physics - Volume 2 Heat and Temperature Pages 12-14: Q10 Solution: A concrete slab has a length of 10 m on a winter night when the …

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often write $Delta L=\alpha\Delta T$ and then add it directly to $L_0$, giving $L=L_0+\alpha\Delta T$. The correct relation is $Delta L=\alpha L_0\Delta T$, so $L=L_0(1+\alpha\Delta T)$. Remember to multiply the temperature term by the original length before adding.

A concrete slab has a length of 10 m on a winter night when the temperature is 0�C. Find the length of the slab on a summer day when the temperature is 35�C. The coefficient of linear expansion of concrete is

1.0 \times 10^{-5} \text{ �C}^{-1}

.

Step-by-Step Verified Solution

**Answer:**

L = 10.0035 \text{ m}

**Step-by-Step Explanation:**

L_0 = 10

m,

\Delta T = 35�\text{C}

,

\alpha = 1.0 \times 10^{-5}

/�C.

L = L_0(1 + \alpha \Delta T) = 10(1 + 1.0 \times 10^{-5} \times 35) = 10(1.00035) = 10.0035 \text{ m}

All Questions in this Chapter

QPage 11: Q1 QPage 11: Q2 QPage 11: Q3 QPage 11: Q4 QPage 11: Q5 QPage 11: Q6 QPage 11: Q7 QPage 11: Q8 QPage 11: Q9 QPage 11: Q10 QPage 11: Q11 QPage 11: Q12 QPage 11: Q13 QPage 12: Q1 QPage 12: Q2 QPage 12: Q3 QPage 12: Q4 QPage 12: Q5 QPage 12: Q6 QPages 11-12: Q1 QPages 11-12: Q2 QPages 11-12: Q3 QPages 11-12: Q4 QPages 11-12: Q5 QPages 11-12: Q6 QPages 11-12: Q7 QPages 11-12: Q8 QPages 11-12: Q9 QPages 11-12: Q10 QPages 11-12: Q11 QPages 12-14: Q1 QPages 12-14: Q2 QPages 12-14: Q3 QPages 12-14: Q4 QPages 12-14: Q5 QPages 12-14: Q6 QPages 12-14: Q7 QPages 12-14: Q8 QPages 12-14: Q9 QPages 12-14: Q10 QPages 12-14: Q11 QPages 12-14: Q12 QPages 12-14: Q13 QPages 12-14: Q14 QPages 12-14: Q15 QPages 12-14: Q16 QPages 12-14: Q17 QPages 12-14: Q18 QPages 12-14: Q19 QPages 12-14: Q20 QPages 12-14: Q21 QPages 12-14: Q22 QPages 12-14: Q23 QPages 12-14: Q24 QPages 12-14: Q25 QPages 12-14: Q26 QPages 12-14: Q27 QPages 12-14: Q28 QPages 12-14: Q29 QPages 12-14: Q30 QPages 12-14: Q31 QPages 12-14: Q32 QPages 12-14: Q33 QPages 12-14: Q34

Related Learning Resources & Exam Preparation

Chapter Practice Bank

Practice all topic-wise questions from Heat and Temperature

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