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MHT CET 202622 AprilEvening Shift
Exam
MHT CET
Year
2026
Date
22 April
Shift
Evening Shift
Subject
Physics
Chapter
Semiconductors

MHT CET 2026 · 22 April · Evening Shift · Physics · Semiconductors

Which of the following gives output 0 in the NAND gate?

Which of the following gives output 00 in the NAND gate?

Options

  1. AA=1A = 1, B=0B = 0
  2. BA=1A = 1, B=1B = 1
  3. CA=0A = 0, B=0B = 0
  4. DA=0A = 0, B=1B = 1

Correct answer

B. A=1A = 1, B=1B = 1

Step-by-step solution

The Boolean expression for a NAND gate is Y=A⋅B‾Y = \overline{A \cdot B}.

For A=1A = 1, B=0B = 0, Y=1⋅0‾=0‾=1Y = \overline{1 \cdot 0} = \overline{0} = 1

For A=1A = 1, B=1B = 1, Y=1⋅1‾=1‾=0Y = \overline{1 \cdot 1} = \overline{1} = 0

For A=0A = 0, B=0B = 0, Y=0⋅0‾=0‾=1Y = \overline{0 \cdot 0} = \overline{0} = 1

For A=0A = 0, B=1B = 1, Y=0⋅1‾=0‾=1Y = \overline{0 \cdot 1} = \overline{0} = 1

The output is 00 when A=1A = 1 and B=1B = 1.

Answer: A=1A = 1, B=1B = 1
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