Verified Solution • 2025–26 Session moderate

QPages 11-12: Q7: HC Verma: Concepts of Physics - Volume 2 Heat and Temperature Pages 11-12: Q7 Solution: Two identical rectangular strips, one of copper and the other…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students frequently reverse the curvature direction, thinking the metal with the larger expansion coefficient becomes the inner (concave) side. In reality, the faster‑expanding layer must cover a longer arc, so it ends up on the outer (convex) side of the bend; the slower‑expanding layer forms the inner side.

Two identical rectangular strips, one of copper and the other of steel, are riveted together to form a bimetallic strip αcopper>αsteel\alpha_{copper} > \alpha_{steel}). On heating, this strip will

Multiple Choice Options

  • A remain straight
  • B bend with copper on convex side
  • C bend with steel on convex side
  • D get twisted

Step-by-Step Verified Solution

**Answer:** (b) bend with copper on convex side. **Step-by-Step Explanation:** Since __copper > __steel, copper expands more than steel when heated. In a bimetallic strip, the metal that expands more becomes the outer (convex) side of the bend. Hence, copper will be on the convex side.

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