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JEE Main 2026 — Physics Modern Physics

2026mcqmedium

Identify the correct truth table of the given logic circuit.

JEE Main 2026 Physics, Semiconductors — question figure

Official previous-year question

Held on 24 Jan 2026 · Verified 6 Jul 2026.

Options

A
$\begin{array}{|c|c|c|} \hline A & B & Y \\ \hline 0 & 0 & 1 \\ \hline 0 & 1 & 0 \\ \hline 1 & 0 & 1 \\ \hline 1 & 1 & 0 \\ \hline \end{array}$
B
$\begin{array}{|c|c|c|} \hline A & B & Y \\ \hline 0 & 0 & 1 \\ \hline 0 & 1 & 1 \\ \hline 1 & 0 & 1 \\ \hline 1 & 1 & 0 \\ \hline \end{array}$
C
$\begin{array}{|c|c|c|} \hline A & B & Y \\ \hline 0 & 0 & 0 \\ \hline 0 & 1 & 1 \\ \hline 1 & 0 & 1 \\ \hline 1 & 1 & 0 \\ \hline \end{array}$
D
$\begin{array}{|c|c|c|} \hline A & B & Y \\ \hline 0 & 0 & 0 \\ \hline 0 & 1 & 0 \\ \hline 1 & 0 & 1 \\ \hline 1 & 1 & 0 \\ \hline \end{array}$

Did you get this right?

Solution

Analysing the logic circuit:

The output is $Y = A \cdot \overline{A \cdot B}$

$= A \cdot (\bar{A} + \bar{B})$

$= A\bar{A} + A\bar{B} = 0 + A\bar{B} = A\bar{B}$

Truth table:

$A=0, B=0 \Rightarrow Y=0$

$A=0, B=1 \Rightarrow Y=0$

$A=1, B=0 \Rightarrow Y=1$

$A=1, B=1 \Rightarrow Y=0$

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Options

$\begin{array}{|c|c|c|} \hline A & B & Y \\ \hline 0 & 0 & 1 \\ \hline 0 & 1 & 0 \\ \hline 1 & 0 & 1 \\ \hline 1 & 1 & 0 \\ \hline \end{array}$

$\begin{array}{|c|c|c|} \hline A & B & Y \\ \hline 0 & 0 & 1 \\ \hline 0 & 1 & 1 \\ \hline 1 & 0 & 1 \\ \hline 1 & 1 & 0 \\ \hline \end{array}$

$\begin{array}{|c|c|c|} \hline A & B & Y \\ \hline 0 & 0 & 0 \\ \hline 0 & 1 & 1 \\ \hline 1 & 0 & 1 \\ \hline 1 & 1 & 0 \\ \hline \end{array}$

$\begin{array}{|c|c|c|} \hline A & B & Y \\ \hline 0 & 0 & 0 \\ \hline 0 & 1 & 0 \\ \hline 1 & 0 & 1 \\ \hline 1 & 1 & 0 \\ \hline \end{array}$

Solution

Analysing the logic circuit:

The output is $Y = A \cdot \overline{A \cdot B}$

$= A \cdot (\bar{A} + \bar{B})$

$= A\bar{A} + A\bar{B} = 0 + A\bar{B} = A\bar{B}$

Truth table:

$A=0, B=0 \Rightarrow Y=0$

$A=0, B=1 \Rightarrow Y=0$

$A=1, B=0 \Rightarrow Y=1$

$A=1, B=1 \Rightarrow Y=0$

JEE Main 2026 — Physics Modern Physics

Options

Did you get this right?

Solution

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JEE Main 2026 — Physics Modern Physics

Options

Did you get this right?

Solution

Your note

JEE Main Modern Physics in other years

More JEE Main Modern Physics questions

Other Physics topics for JEE Main

Mechanics

Electromagnetism

Optics

Thermodynamics

Waves & Oscillations

Keep practicing Modern Physics