Question

Choose the most appropriate matching of the items in Column 1 with those in Column 2. \[ \begin{array}{|c|c|} \hline \textbf{Column 1} & \textbf{Column 2} \\ \hline (i)\ \text{PIN diode} & Q.\ \text{Radio frequency and microwave devices} \\ (ii)\ \text{Tunnel diode} & S.\ \text{Oscillator} \\ (iii)\ \text{Zener diode} & P.\ \text{Voltage regulation} \\ (iv)\ \text{Photo diode} & R.\ \text{Optoelectronic detection} \\ \hline \end{array} \]

• 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

Hint:

When identifying applications of diodes, consider their primary function: PIN diodes in RF devices, Zener diodes for voltage regulation, and photo diodes for optoelectronics.

Answer 1

The Correct Option is A

- (i) PIN diode: The PIN diode is primarily used in radio frequency and microwave devices, which is indicated by option (Q).
- (ii) Tunnel diode: Tunnel diodes are typically used in oscillators, which corresponds to option (S).
- (iii) Zener diode: Zener diodes are mainly used for voltage regulation, making option (P) the correct match.
- (iv) Photo diode: Photo diodes are used for optoelectronic detection, which matches option (R).
Thus, the correct matching is (A): (i) - Q, (ii) - S, (iii) - P, (iv) - R.