Q. No.
| A. | For a solar-cell, the \(I\text-V\) characteristics lies in the IV quadrant of the given graph. |
| B. | In a reverse-biased pn junction diode, the current measured in (\(\mu \text{A}\)), is due to majority charge carriers. |
| 1. | A is incorrect but B is correct. |
| 2. | Both A and B are correct. |
| 3. | Both A and B are incorrect. |
| 4. | A is correct but B is incorrect. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | forward biased zener diode. |
| 2. | type of light-emitting diode. |
| 3. | diode working on the principle of photo-voltaic effect. |
| 4. | type of photo-diode with external biasing. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
The \(I\text-V\) characteristics shown above are exhibited by a:
| 1. | light-emitting diode | 2. | zener-diode |
| 3. | photodiode | 4. | solar cell |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| Statement I: | Photovoltaic devices can convert optical radiation into electricity. |
| Statement II: | Zener diode is designed to operate under reverse bias in the breakdown. |
| 1. | Statement I is incorrect but Statement II is correct. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is correct but Statement II is incorrect. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | Zener voltage remains constant at the breakdown. |
| 2. | It is designed to operate under reverse bias. |
| 3. | The depletion region formed is very wide. |
| 4. | \(\mathrm{p}\) and \(\mathrm{n}\) regions of the Zener diode are heavily doped. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| Statement A: | A Zener diode is connected in reverse bias when used as a voltage regulator. |
| Statement B: | The potential barrier of \(\mathrm{p\text-n}\) junction lies between \(0.2\) V to \(0.3\) V. |
| 1. | Statement A is correct and Statement B is incorrect. |
| 2. | Statement A is incorrect and Statement B is correct. |
| 3. | Statement A and Statement B both are correct. |
| 4. | Statement A and Statement B both are incorrect. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn LED is constructed from a \(\mathrm{p\text{-}n}\) junction diode using \(\mathrm{GaAsP}\). The energy gap is \(1.9~\text{eV}\). The wavelength of the light emitted will be equal to:
1. \(10.4 \times 10^{-26} \text{m}\)
2. \(654~ \text{nm}\)
3. \(654~ \text{m}\)
4. \(654\times 10^{-11}~\text{m}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe given circuit has two ideal diodes connected as shown in the figure below. The current flowing through the resistance \(R_1\) will be:
1. \(2.5~\text{A}\)
2. \(10.0~\text{A}\)
3. \(1.43~\text{A}\)
4. \(3.13~\text{A}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe given graph represents the \(\mathrm{V\text{-} I}\) characteristic for a semiconductor device.
Which of the following statement is correct?
| 1. | It is a \(\mathrm{V\text{-} I}\) characteristic for the solar cell where point \(\mathrm{A}\) represents open-circuit voltage and point \(\mathrm{B}\) short circuit current. |
| 2. | It is for a solar cell and points \(\mathrm{A}\) and \(\mathrm{B}\) represent open-circuit voltage and current, respectively. |
| 3. | It is for a photodiode and points \(\mathrm{A}\) and \(\mathrm{B}\) represent open-circuit voltage and current respectively. |
| 4. | It is for a LED and points \(\mathrm{A}\) and \(\mathrm{B}\) represent open circuit voltage and short circuit current, respectively. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA Zener diode, having a breakdown voltage equal to 15 V, is used in a voltage regulator circuit as shown in the figure. The current through the diode is:
1. 5 mA
2. 10 mA
3. 15 mA
4. 20 mA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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