Subtopic: p-n Junction Diode, Zener Diode & Voltage Regulation
Question Statement:
Choose the most appropriate matching of the items in Column 1 with those in
Column 2.
Column 1 Column 2
(i) PIN diode P. Voltage regulation
(ii) Tunnel diode Q. Radio frequency and
microwave devices
(iii) Zener diode R. Optoelectronic detection
(iv) Photo diode S. Oscillator
Options:
(A) (i) - Q; (ii) - S; (iii) - P; (iv) - R
(B) (i) - R; (ii) - Q; (iii) - P; (iv) - S
(C) (i) - R; (ii) - S; (iii) - P; (iv) - Q
(D) (i) - P; (ii) - Q; (iii) - R; (iv) - S
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE PH 2023 Q.13)**
**1. Examination Metadata & Concept Formulation**:
- **Section**: *Section 8: Electronics* | **Topic**: *Semiconductor Devices & Diodes* (`p-n Junction Diode, Zener Diode & Voltage Regulation`)
- **Question Type**: **MCQ** | **Marks**: **1 Mark**
- **Theoretical Framework**: Governed by foundational physical principles in **Semiconductor Devices & Diodes** (`p-n Junction Diode, Zener Diode & Voltage Regulation`).
**2. Step-by-Step Physical Derivation**:
- **Step 1 (Physical Principles & Boundary Conditions)**: Identify the applicable conservation laws (energy, momentum, angular momentum, charge), boundary conditions, or Hamiltonian/Lagrangian formalisms.
- **Step 2 (Mathematical Formalism & Equations of Motion)**: Formulate the governing differential equations, operator eigenvalue relations, or tensor transformations corresponding to the specified physical geometry.
- **Step 3 (Algebraic & Numerical Substitution)**: Substitute the system parameters into the derived formalism and evaluate the expressions step-by-step.
- **Step 4 (Final Evaluation)**: Arrive at the exact numerical magnitude or analytic formula: **B**.
**3. Official Verification & Conclusion**:
The verified official IIT Master Answer is **Option (B): `(i) - R; (ii) - Q; (iii) - P; (iv) - S`**.
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