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Q. No.A full wave rectifier circuit with diodes \((D_1)\) and \((D_2)\) is shown in the figure. If input supply voltage \(V_{\text{in}}=220\sin(100\pi t)\) volt, then at \(t=15~\text{ms}\text{:}\)
| 1. | \(D_1\) and \(D_2\) both are forward biased |
| 2. | \(D_1\) and \(D_2\) both are reverse biased |
| 3. | \(D_1\) is forward biased, \(D_2\) is reverse biased |
| 4. | \(D_1\) is reverse biased, \(D_2\) is forward biased |
Subtopic: Rectifier |
From NCERT
NEET - 2025
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The output \(Y\) of the given logic implementation is similar to the output of which gate?
1. OR
2. NOR
3. AND
4. NAND
1. OR
2. NOR
3. AND
4. NAND
Subtopic: Logic gates |
From NCERT
NEET - 2025
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Consider the following Statements A and B and identify the correct answer:
| 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. |
Subtopic: Applications of PN junction |
56%
From NCERT
NEET - 2024
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A logic circuit provides the output \(Y\) as per the following truth table:
The expression for the output \(Y\) is :
1. \(A \cdot \overline{B}+\overline{A} \)
2. \(\overline{B} \)
3. \(B \)
4. \(A \cdot B+\overline{A}\)
| \(A\) | \(B\) | \(Y\) |
| 0 0 1 1 |
0 1 0 1 |
1 0 1 0 |
1. \(A \cdot \overline{B}+\overline{A} \)
2. \(\overline{B} \)
3. \(B \)
4. \(A \cdot B+\overline{A}\)
Subtopic: Logic gates |
68%
From NCERT
NEET - 2024
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The output (\(Y\)) of the given logic gate is similar to the output of an/a:
| 1. | \(\text{NOR}\) gate | 2. | \(\text{OR}\) gate |
| 3. | \(\text{AND}\) gate | 4. | \(\text{NAND}\) gate |
Subtopic: Logic gates |
65%
From NCERT
NEET - 2024
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Subtopic: PN junction |
From NCERT
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A solar cell is a:
| 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. |
Subtopic: Applications of PN junction |
74%
From NCERT
NEET - 2024
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Which input \((A,B)-\)output \((Y)\) combination correctly represents the given logic circuit?
| 1. | \(A=1,B=1,Y=1\) |
| 2. | \(A=0,B=1,Y=1\) |
| 3. | \(A=1,B=0,Y=0\) |
| 4. | \(A=0,B=0,Y=1\) |
Subtopic: Logic gates |
59%
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Zener diode works:
| 1. | in forward bias only. |
| 2. | in reverse bias only. |
| 3. | as a voltage regulator in forward bias and as a simple pn junction diode in reverse bias. |
| 4. | as a voltage regulator in reverse bias and as a simple pn junction diode in forward bias. |
Subtopic: Applications of PN junction |
57%
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NEET - 2024
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The \(I\text-V\) characteristics shown below are exhibited by a:
| 1. | Light-emitting diode | 2. | Zener diode |
| 3. | Photodiode | 4. | Solar cell |
Subtopic: Applications of PN junction |
65%
From NCERT
NEET - 2024
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