Q. Match the items given in List I and those in List II. Select your answers using the codes given in the question.
| List I | List II |
| Diode | Application |
| A. Gunn Diode | 1. Mixer |
| B. Zener Diode | 2. Microwave oscillators |
| C. Varactor Diode | 3. Frequency modulation |
| D. Schottky Diode | 4. Voltage comparison |
Codes: A B C D
(a) 2 4 3 1
(b) 3 1 2 4
(c) 2 1 3 4
(d) 3 4 2 1
Q. Match the items given in List I and those in List II. Select your answers using the codes given in the question.
| List I | List II |
| P-N junction devices | Applications |
| A. Zener Diode | 1. first switching circuits |
| B. PIN Diode | 2. microwave switches |
| C. Tunnel Diode | 3. local oscillators for radars |
| D. Varactor Diode | 4. Frequency converters |
| 5. Voltage regulators |
Codes: A B C D
(a) 5 2 1 4
(b) 1 2 5 4
(c) 5 3 1 2
(d) 1 3 5 2
Q. Match the items given in List I and those in List II. Select your answers using the codes given in the question.
| List I | List II |
| Band gap in eV | Material |
| A. 0.67 | 1. GaAs |
| B. 1.1 | 2. InAs |
| C. 1.4 | 3. Si |
| D. 2.4 | 4. Germanium |
| 5. Cadmium sulphide |
Codes: A B C D
(a) 3 4 5 2
(b) 4 3 1 5
(c) 3 4 2 1
(d) 2 1 3 4