Physics Circle home Student Login

Home›Chapters›Semiconductor Electronics PYQs›Logic Gates›Question 125

JEE Main 2021 (25 Feb, Shift 2) · Logic Gates

Logic Gates question from JEE Main 2021 (25 Feb, Shift 2)

Q125JEE Main 2021 · 25 FEB · SHIFT 2Medium

Logic Gates

The truth table for the following logic circuit is:

Figure

Show answer and solution

Answer: (d)

  1. Upper AND gets AA and Bˉ\bar{B}; lower AND gets Aˉ\bar{A} and BB.
  2. Y=ABˉ+AˉB‾Y = \overline{A\bar{B} + \bar{A}B} (NOR), which is XNOR.
  3. Rows: 00→100 \to 1, 01→001 \to 0, 10→010 \to 0, 11→111 \to 1.
  4. So the answer is (d).
Report a mistake

More questions on Logic Gates