Skip to content
PhysicsNEET 2025Logic gates

Semiconductor Electronics

The output (YY) of the given logic implementation is similar to the output of a/an _____ gate.

Question 8 as printed in the NEET 2025 booklet

  1. A.AND
  2. B.NAND
  3. C.OR
  4. D.NOR✓

Solution

The top gate is a NOR: A+B‾\overline{A + B}. The bottom gate is a NAND: A⋅B‾\overline{A \cdot B}. Their AND gives Y=AˉBˉ⋅(Aˉ+Bˉ)=AˉBˉY = \bar A\bar B \cdot (\bar A + \bar B) = \bar A\bar B, which is exactly A+B‾\overline{A + B} — a NOR gate.

Save for spaced revision (free account)

More from this chapter in past papers

From Physics › Semiconductor Electronics › Logic gates — lectures, notes and every past question on it.

Last revised . Found a mistake? Tell us — corrections are the fastest thing we act on.

ShareWhatsAppTelegram