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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceDiagram basedMediumData or graph

JEE Main 27 June 2022, Shift 1, Physics Q49

Question 49 of 90 in this shift, Physics question 19 of 30, Section A.

Identify the correct Logic Gate for the following output (Y) of two inputs A and B.

The figure, in words

Three stacked timing waveforms against vertical dashed lines: A (inputs), B (inputs) and Y (output), each a rectangular wave switching between a high and a low level; Y is low only for a single interval and high elsewhere.
  1. (1)[figure: logic circuit, inputs A and B go into an OR-shaped gate whose output goes to a NOT triangle with bubble, output Y]
  2. (2)[figure: logic circuit, inputs A and B go into an AND-shaped gate whose output goes to a NOT triangle with bubble, output Y]Official answer
  3. (3)[figure: logic circuit, inputs A and B go into an OR-shaped gate with a bubble on input side of A, output goes to a NOT triangle with bubble, output Y]
  4. (4)[figure: logic circuit, input A goes directly into an AND-shaped gate with output bubble; input B goes through a NOT triangle with bubble into the same gate; output Y]

Official answer

Option 2

NTA final key.

Chapter
Semiconductor Electronics: Materials, Devices and Simple Circuits
Topic
Logic Gates
Idea tested
Timing Diagrams and Waveform Analysis

Same idea in other shifts

Asked 7× in all
  1. 8 Apr 2026, Shift 2 · Q45The output YY for the given inputs AA and BB to the circuit is :MediumDiagram basedHas a figure
  2. 8 Apr 2023, Shift 1 · Q42For the logic circuit shown, the output waveform at Y is:MediumDiagram basedHas a figure
  3. 13 Apr 2023, Shift 1 · Q47For the following circuit and given inputs A and B, choose the correct option for output 'Y'HardDiagram basedHas a figure
  4. 27 Jul 2022, Shift 1 · Q49A logic gate circuit has two inputs A and B and output Y. The voltage waveforms of A, B and Y are shown below. The logic gate circuit is:EasyDiagram basedHas a figure
  5. 3 Aug 2021, Shift 1 · Q20In the given figure, a logic circuit has the input waveforms `A' and `B'. The correct output waveform will be -MediumDiagram basedHas a figure
  6. 26 Feb 2021, Shift 2 · Q4Draw the output signal Y in the given combination of gates.MediumDiagram basedHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.