Q 12-14-054JEE MainJEE Main 2025 (24 Jan, Shift 2)Easy
The output of the circuit is low (zero) for:
(A) $X = 0, Y = 0$ (B) $X = 0, Y = 1$ (C) $X = 1, Y = 0$ (D) $X = 1, Y = 1$
Choose the correct answer from the options given below:
Answer: (A) (B), (C) and (D) only
The first gate is OR: its output is $X + Y$. The second is a NOR gate with both inputs joined, which acts as a NOT gate. So
$$\text{Output} = \overline{X + Y}$$
This is low whenever at least one input is 1: cases (B), (C) and (D).
Solution by Sreeraj P, M.Sc Physics