Q.

The circuit diagram shown here corresponds to the logic gate,

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a

OR

b

NAND

c

AND

d

NOR

answer is B.

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Detailed Solution

Case-1 : A = 0, B = 0
LED will glow
Y=1

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Case-2 : A = 0, B = 1
No current will flow through LED

 Y=0

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Case-3 : A = 1, B = 0
Again no current will through LED

 Y=0

Case-4 : A = 1, B = 1
Again Y = 0

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ABY
001
010
100
110

NOR gate

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