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Saturday, 10 October

JEE Main 2025 · PhysicsMultiple choiceDiagram basedEasyDiagram reading

JEE Main 3 April 2025, Shift 2, Physics Q45

Question 45 of 75 in this shift, Physics question 20 of 25, Section A.

The truth table corresponding to the circuit given below is :

The figure, in words

Logic circuit: inputs A and B feed an OR gate; the OR output goes to one input of an AND gate whose other input is taken directly from input A (wire from A bypassing the OR gate); output C from the AND gate. Options are truth tables with columns A, B, C.
  1. (1)[truth table (A,B -> C): 00->0; 01->0; 10->1; 11->1]Official answer
  2. (2)[truth table (A,B -> C): 00->0; 10->0; 01->0; 11->1]
  3. (3)[truth table (A,B -> C): 00->1; 01->0; 10->0; 11->0]
  4. (4)[truth table (A,B -> C): 00->1; 10->0; 01->0; 11->0]

Official answer

Option 1

NTA final key.

Chapter
Semiconductor Electronics: Materials, Devices and Simple Circuits
Topic
Logic Gates
Idea tested
Combinational Logic Circuits

Same idea in other shifts

Asked 16× in all
  1. 2 Apr 2026, Shift 2 · Q30If X and Y are the inputs, the given circuit works asMediumDiagram basedHas a figure
  2. 4 Apr 2026, Shift 1 · Q38Two 44 bits binary numbers, A=1101A=1101 and B=1010B=1010 are given in the inputs of a logic circuit shown in figure below. The output (YY) will…EasyDiagram basedHas a figure
  3. 5 Apr 2026, Shift 1 · Q45For the given logic circuit, which of the following inputs combination will make both LED-1 and LED-2 to glow?EasyDiagram basedHas a figure
  4. 6 Apr 2026, Shift 2 · Q43Refer to the logic circuit given below. For two inputs (A=1A=1, B=1B=1) and (A=0A=0, B=1B=1), output (YY) will be __________.EasyDiagram basedHas a figure
  5. 2 Apr 2025, Shift 2 · Q39In the digital circuit shown in the figure, for the given inputs the P and Q values are :MediumDiagram basedHas a figure
  6. 3 Apr 2025, Shift 1 · Q45Choose the correct logic circuit for the given truth table having inputs A and B. Inputs A, B / Output Y: A=0,B=0: Y=0 A=0,B=1: Y=0…MediumDiagram basedHas a figure
  7. 7 Apr 2025, Shift 2 · Q45Consider the following logic circuit. The output is Y=0Y=0 when :EasyDiagram basedHas a figure
  8. 8 Apr 2024, Shift 1 · Q47The output Y of following circuit for given inputs is :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 42 of the 174 JEE Main shifts held from 2017 to 2026.