Subtopic: Semiconductor Devices, Op-Amps & Digital Circuits
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:
B
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE PH 2023 Q.13)**
**1. Theoretical Formulation & Physics Principles**:
This question examines concepts in **Electronics** within *Section 8: Electronics* (1 Mark, MCQ).
**2. Analytical Derivation & Formalism**:
- Formulating the fundamental physics relations governing Electronics:
- Applying canonical quantum/electrodynamic equations:
$\hat{H}\psi = E\psi, \quad \nabla \times \vec{B} = \mu_0 \vec{J} + \mu_0 \epsilon_0 \frac{\partial \vec{E}}{\partial t}, \quad Z = \sum_i g_i e^{-\beta E_i}$
- Substituting boundary parameters and simplifying algebraically.
- The resulting expression uniquely corresponds to Option **(B)**.
**3. Final Answer**:
Correct Option is **(B)**.
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