In the circuit, the logical value of $A=1$ or $B=1$ when potential at A or B is $5$ V and the logical value of $A=0$ or $B=0$ when potential at A or B is $0$ V. The truth table of the given circuit will be :

Option 1: [truth table] A B Y: 0 0 0; 1 0 0; 0 1 0; 1 1 1

[truth table] A B Y: 0 0 0; 1 0 0; 0 1 0; 1 1 1

[truth table] A B Y: 0 0 0; 1 0 1; 0 1 1; 1 1 1

[truth table] A B Y: 0 0 0; 1 0 0; 0 1 0; 1 1 0

[truth table] A B Y: 0 0 1; 1 0 1; 0 1 1; 1 1 0

JEE Main 2022 · PhysicsMultiple choiceDiagram basedMediumDiagram reading

JEE Main 25 July 2022, Shift 1, Physics Q50

Question 50 of 90 in this shift, Physics question 20 of 30, Section A.

In the circuit, the logical value of

A=1

B=1

when potential at A or B is

5

V and the logical value of

A=0

B=0

when potential at A or B is

0

V. The truth table of the given circuit will be :

The figure, in words

Inputs A and B each pass through a diode (D1 and D2 respectively, arrow pointing to the right) to a common node that is the output Y; from this node a resistor R goes to a 5 V battery whose other terminal is grounded (V = 0).

(1)[truth table] A B Y: 0 0 0; 1 0 0; 0 1 0; 1 1 1Official answer
(2)[truth table] A B Y: 0 0 0; 1 0 1; 0 1 1; 1 1 1
(3)[truth table] A B Y: 0 0 0; 1 0 0; 0 1 0; 1 1 0
(4)[truth table] A B Y: 0 0 1; 1 0 1; 0 1 1; 1 1 0

Official answer

Option 1

NTA final key (2022 Session 2).

Chapter: Semiconductor Electronics: Materials, Devices and Simple Circuits
Topic: Logic Gates
Idea tested: Diode Realization of OR and AND Gates

JEE Main 25 July 2022, Shift 1, Physics Q50

Same idea in other shifts