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 False but Statement II is True. |
2. | Both Statement I and Statement II are True. |
3. | Both Statement I and Statement II are False. |
4. | Statement I is True but Statement II is False. |
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. |
Consider the following Statements (A) and (B) and identify the correct answer.
(A) | A Zener diode is connected in reverse bias when used as a voltage regulator. |
(B) | The potential barrier of p-n junction lies between \(0.2\) V to \(0.3\) V. |
1. | (A) is correct and (B) is incorrect. |
2. | (A) is incorrect and (B) is correct. |
3. | (A) and (B) both are correct. |
4. | (A) and (B) both are incorrect. |
An 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. \(654\times 10^{-11}~\text{m}\)