JEE Main 2022 · 25 Jun · Shift 2 · Physics Q48 · Dronacharya Exams

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PhysicsSingle correct+4 / -1Question 48 of 90

Identify the logic operation performed by the given circuit :

A feeds both inputs of a NOR gate and B feeds both inputs of a second NOR gate; their outputs are the two inputs of a third NOR gate whose output is Y.

A

AND gate

B

OR gate

C

NOR gate

D

NAND gate

Answer and worked solution

Official answer: A

Gates. Each input NOR gate has its inputs tied, so it acts as NOT: outputs $\bar A$ and $\bar B$ .

Final NOR. $Y=\overline{\bar A+\bar B}=A\cdot B$ , an AND gate.

(A)

Topics:Logic gates

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