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NEET 2019 · Logic Gates

Logic Gates question from NEET 2019

Q148NEET 2019Medium

Logic Gates

The circuit diagram shown here corresponds to the logic gate,

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Answer: (b)

Switches $A$ and $B$ are in parallel and connect the LED point directly to ground.
If either switch is closed the LED is shorted and does not glow ( $Y=0$ ).
LED glows only when both are open: $Y = \overline{A+B}$ .
So the answer is (b) NOR.

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