Logic Gates question from JEE Main 2026 (8 Apr, Shift 2)

Answer: (b)

1. Upper AND: $A \cdot B$. Lower AND has a bubble on its A input: $\bar{A} \cdot B$.
2. $Y = A B + \bar{A} B = B(A + \bar{A}) = B$.
3. From the waveform, $B = 1$ for $0$ to $2$ s and $B = 0$ for $2$ to $3$ s.
4. So Y is 1 from 0 to 2 s and 0 from 2 to 3 s: the answer is (b).