JEE PYQ Semiconductors - Chapter-wise Questions with Solutions

About Semiconductors PYQs

Semiconductors has 420 previous year questions in the Quantrex Academy JEE Main & Advanced Physics bank. The 220 questions in this list come from JEE Main (220), spanning 2012 to 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

JEE Semiconductors PYQs with Solutions

About Semiconductors PYQs

Questions by year (this list)

Semiconductors questions with solutions

The output Y for the given inputs A and B to the circuit is:

Refer to the logic circuit given below. For two inputs (A=1, B=1) and (A=0, B=1) , output (Y) will be __________.

The maximum rated power of the LED is 2 mW and it is used in the circuit with input voltage of 5 V as shown in the figure below. The current through resistance R_S is 0.5 mA. The

In a semiconductor p-n diode, the doping concentrations on p-side and n-side are 10^ 15 atoms/cm^3 and 10^ 18 atoms/cm^3 , respectively. Which one of the following statements is

For the given logic circuit, which of the following inputs combination will make both LED -1 and LED -2 to glow?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: A diode under reverse-biased condition provides very small

A diode has Zener voltage of 10 V and maximum power dissipation of 0.5 W, then the minimum resistance to be used in series with this diode for safety when it is connected to a 25

Two 4 bits binary numbers, A = 1101 and B = 1010 are given in the inputs of a logic circuit shown in figure below. The output (Y) will be:

If X and Y are the inputs, the given circuit works as _______.

For the given circuit (shown in part (A)) the time dependent input voltage v_ in (t) and corresponding output v_o(t) are shown in part (B) and part (C), respectively. Identify the

Two p-n junction diodes D_ 1 and D_ 2 are connected as shown in figure. A and B are input signals and C is the output. The given circuit will function as a \_\_\_\_ .

Assuming in forward bias condition there is a voltage drop of 0.7 V across a silicon diode, the current through diode D_ 1 in the circuit is \_\_\_\_ mA. (Assume all diodes in the

Identify the correct truth table of the given logic circuit.

A voltage regulating circuit consisting of Zener diode, having break-down voltage of 10 V and maximum power dissipation of 0.4 W, is operated at 15 V. The approximate value of

For the given logic gate circuit, which of the following is the correct truth table?

The following diagram shows a Zener diode as a voltage regulator. The Zener diode is rated at V_ z =5 ~V and the desired current in load is 5 mA. The unregulated voltage source

The correct truth table for the given input data of the following logic gate is : Inputs

Find the correct combination of A, B, C and D inputs which can cause the LED to glow.

The given circuit works as :

The output voltage in the following circuit is (Consider ideal diode case)

Consider the following logic circuit. The output is Y=0 when :

In the following circuit, the reading of the ammeter will be (Take Zener breakdown voltage =4 ~V)

Consider a n-type semiconductor in which n_ e and n_ h are number of electrons and holes, respectively. (A) Holes are minority carriers (B) The dopant is a pentavalent atom (C) n_

The Boolean expression Y=A B C+ A C can be realised with which of the following gate configurations. A. One 3-input AND gate, 3 NOT gates and one 2input OR gate, One 2-input AND

The truth table corresponding to the circuit given below is

Choose the correct logic circuit for the given truth table having inputs A and B. Inputs Output A B Y 0 0 0 0 1 0 1 0 1 1 1 1

In the digital circuit shown in the figure, for the given inputs the P and Q values are :

A zener diode with 5 V zener voltage is used to regulate an unregulated dc voltage input of 25 V. For a 400 Ω resistor connected in series, the zener current is found to be 4

The truth table for the circuit given below is :

For the circuit shown above, equivalent GATE is :

In the circuit shown here, assuming threshold voltage of diode is negligibly small, then voltage V_ A B is correctly represented by :

Which of the following circuits has the same outpur as that of the given circuit?

The output of the circuit is low (zero) for : (A) X=0, Y=0 (B) X=0, Y=1 (C) X=1, Y=0 (D) X=1, Y=1 Choose the correct answer from the options given below :

Consider the following statements: A. The junction area of solar cell is made very narrow compared to a photo diode. B. Solar cells are not connected with any external bias. C.

Refer to the circuit diagram given in the figure. which of the following observations are correct? A. Total resistance of circuit is 6 Ω B. Current in Ammeter is 1 A C. Potential

array c|c|c A & B & Y 0 & 0 & 1 0 & 1 & 1 1 & 0 & 0 1 & 1 & 1 array To obtain the given truth table, following logic gate should be placed at G:

Which of the following circuits represents a forward biased diode? Choose the correct answer from the options given below :

The I-V characteristics of an electronic device shown in the figure. The device is:

In the truth table of the above circuit the value of X and Y are :

A light emitting diode (LED) is fabricated using GaAs semiconducting material whose band gap is 1.42 eV . The wavelength of light emitted from the LED is :

A potential divider circuit is connected with a dc source of 20 ~V , a light emitting diode of glow in voltage 1.8 ~V and a zener diode of breakdown voltage of 3.2 ~V . The length

The output Y of following circuit for given inputs is :

The acceptor level of a p-type semiconductor is 6 eV . The maximum wavelength of light which can create a hole would be : Given hc=1242 eV nm .

The correct truth table for the following logic circuit is :

The output (Y) of logic circuit given below is 0 only when :

Following gates section is connected in a complete suitable circuit. For which of the following combination, bulb will glow (ON) :

Identify the logic gate given in the circuit:

Which of the diode circuit shows correct biasing used for the measurement of dynamic resistance of p-n junction diode :

The value of net resistance of the network as shown in the given figure is :

Conductivity of a photodiode starts changing only if the wavelength of incident light is less than 660nm . The band gap of photodiode is found to be ((X)/(8))eV . The value of X

In the given circuit if the power rating of Zener diode is 10mW , the value of series resistance R _ s to regulate the input unregulated supply is:

The output of the given circuit diagram is

Identify the logic operation performed by the given circuit.

In the given circuit, the voltage across load resistance ( R _ L ) is:

A Zener diode of breakdown voltage 10V is used as a voltage regulator as shown in the figure. The current through the Zener diode is

The truth table for this given circuit is:

In the given circuit, the breakdown voltage of the Zener diode is 3 . 0V . What is the value of I _ z ?

The truth table of the given circuit diagram is :

Which of the following circuits is reverse - biased ?

The output from a NAND gate having inputs A and B given below will be,

For the following circuit and given inputs A and B, choose the correct option for output ‘ Y ’

From the given transfer characteristic of a transistor in CE configuration, the value of power gain of this configuration is 10 ^ x , for R _ B = 10kΩ , and R _ C = 1kΩ . The

In an n-p-n common emitter (CE) transistor the collector current changes from 5mA to 16mA for the change in base current from 100 and 200 , respectively. The current gain of

The logic operations performed by the given digital circuit is equivalent to:

The logic performed by the circuit shown in figure is equivalent to

If each diode has a forward bias resistance of 25Ω in the below circuit, Which of the following options is correct?

A zener diode of power rating 1 . 6W is to be used as voltage regulator. If the zener diode has a breakdown of 8V and it has to regulate voltage fluctuating between 3V and 10V The

For a given transistor amplifier circuit in CE configuration V _ CC = 1V, R _ C = 1kΩ, R _ b = 100kΩ and β = 100 . Value of base current I _ b is

For the logic circuit shown, the output waveform at Y is

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Diffusion current in a p - n junction is greater than the drift

Name the logic gate equivalent to the diagram attached

The resistivity ( ρ ) of semiconductor varies with temperature. Which of the following curve represents the correct behaviour?

Choose the correct statement about Zener diode:

Match the List I with List II List I List II A Intrinsic Semiconductor I Fermi-level near valence band B n-type semiconductor II Fermi-level at middle of valence and conduction

Given below are two statements: Statement I : In a typical transistor, all three regions emitter, base and collector have same doping level. Statement II : in a transistor

The effect of increase in temperature on the number of electrons in conduction band ( n _ e ) and resistance of a semiconductor will be as: