Verified Solution • 2025–26 Session moderate

QPages 419-421: Q6: HC Verma: Concepts of Physics - Volume 2 Semiconductors and Semiconductor Devices Pages 419-421: Q6 Solution: The band gap between the valence and the conduction bands in…

The band gap between the valence and the conduction bands in zinc oxide ZnO) is 3.2 eV. Suppose an electron in the conduction band combines with a hole in the valence band and the excess energy is released in the form of electromagnetic radiation. Find the maximum wavelength that can be emitted in this process.

Step-by-Step Verified Solution

**Answer:** Maximum wavelength = 388 nm. **Step-by-Step Explanation:** Given: Band gap = 3.2 eV.
λmax=1240E=12403.2=387.5 nm≈388 nm\lambda_{max} = \frac{1240}{E} = \frac{1240}{3.2} = 387.5 \text{ nm} \approx 388 \text{ nm}

All Questions in this Chapter

QPage 418: Q1 QPage 418: Q2 QPage 418: Q3 QPage 418: Q4 QPage 418: Q5 QPage 418: Q6 QPage 418: Q7 QPage 418: Q8 QPage 418: Q9 QPage 418: Q10 QPages 416-417: Q1 QPages 416-417: Q2 QPages 416-417: Q3 QPages 416-417: Q4 QPages 416-417: Q5 QPages 416-417: Q6 QPages 416-417: Q7 QPages 416-417: Q8 QPages 416-417: Q9 QPages 416-417: Q10 QPages 416-417: Q11 QPages 417-418: Q1 QPages 417-418: Q2 QPages 417-418: Q3 QPages 417-418: Q4 QPages 417-418: Q5 QPages 417-418: Q6 QPages 417-418: Q7 QPages 417-418: Q8 QPages 417-418: Q9 QPages 417-418: Q10 QPages 417-418: Q11 QPages 417-418: Q12 QPages 417-418: Q13 QPages 417-418: Q14 QPages 417-418: Q15 QPages 419-421: Q1 QPages 419-421: Q2 QPages 419-421: Q3 QPages 419-421: Q4 QPages 419-421: Q5 QPages 419-421: Q6 QPages 419-421: Q7 QPages 419-421: Q8 QPages 419-421: Q9 QPages 419-421: Q10 QPages 419-421: Q11 QPages 419-421: Q12 QPages 419-421: Q13 QPages 419-421: Q14 QPages 419-421: Q15 QPages 419-421: Q16 QPages 419-421: Q17 QPages 419-421: Q18 QPages 419-421: Q19 QPages 419-421: Q20 QPages 419-421: Q21 QPages 419-421: Q22 QPages 419-421: Q23 QPages 419-421: Q24 QPages 419-421: Q25 QPages 419-421: Q26 QPages 419-421: Q27 QPages 419-421: Q28 QPages 419-421: Q29 QPages 419-421: Q30 QPages 419-421: Q31 QPages 419-421: Q32 QPages 419-421: Q33.1 QPages 419-421: Q33.2 QPages 419-421: Q33.3 QPages 419-421: Q34 QPages 419-421: Q35

Related Learning Resources & Exam Preparation

Chapter Practice Bank
Practice all topic-wise questions from Semiconductors and Semiconductor Devices
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