CBSE · Class 12 · Physics · Semiconductor ElectronicsThe forbidden energy gap in germanium (Ge) at room temperature is approximately:
Step-by-Step Solution
The forbidden energy gap (band gap) for germanium is approximately $0.72\text{ eV}$ at absolute zero, and it decreases slightly to about $0.7\text{ eV}$ at room temperature. For silicon, it is about $1.1\text{ eV}$. Thus, the correct value for germanium is $0.7\text{ eV}$.
Detailed Options Breakdown
Option : 0.3 eV
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Semiconductor Electronics.
Option 1: 0.7 eV (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: 1.1 eV
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Semiconductor Electronics.
Option 3: 1.5 eV
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Semiconductor Electronics.
💡 Study Guide: This question tests core syllabus concepts from Semiconductor Electronics. For formulas, key summaries, and mock exam reference guides, read the full Semiconductor Electronics Revision Notes.