Recommended PYQs (STRICTLY NCERT Based) Semiconductor Electronics Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

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 |

57%

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Q2:

A logic circuit provides the output

Y

$Y$ as per the following truth table:

$A$	$B$	$Y$
0 0 1 1	0 1 0 1	1 0 1 0

The expression for the output

Y

$Y$ is :
1.

A \cdot \bar{B} + \bar{A}

$A \cdot \overline{B}+\overline{A}$
2.

\bar{B}

$\overline{B}$
3.

B

$B$
4.

A \cdot B + \bar{A}

$A \cdot B+\overline{A}$

Subtopic: Logic gates |

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Q3:

The output (

Y

$Y$ ) of the given logic gate is similar to the output of an/a:

1.

NOR

$\text{NOR}$ gate
2.

OR

$\text{OR}$ gate
3.

AND

$\text{AND}$ gate
4.

NAND

$\text{NAND}$ gate

Subtopic: Logic gates |

64%

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Q4:

Choose the correct circuit which can achieve the bridge balance :

1.		2.
3.		4.

Subtopic: PN junction |

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Q5:

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%

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Q6:

Which input

(A, B) -

$(A,B)-$ output

(Y)

$(Y)$ 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 |

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Q7:

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 |

58%

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Q8:

The

I - V

$I\text-V$ characteristics shown below are exhibited by a:

1.	Light-emitting diode	2.	Zener diode
3.	Photodiode	4.	Solar cell

Subtopic: Applications of PN junction |

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Q9:

When the output of an OR gate is applied as input to a NOT gate, then the combination acts as a:
1. NAND gate
2. NOR gate
3. AND gate
4. OR gate

Subtopic: Logic gates |

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Q10:

The output

Y

$Y$ for the inputs

A

$A$ and

B

$B$ of the given logic circuit is:

1.	$A\cdot B$	2.	$\overline{A}\cdot\overline{B}$
3.	$A+B$	4.	$\overline{A}+\overline{B}$

Subtopic: Logic gates |

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