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MHT CET 202626 AprilMorning Shift
Exam
MHT CET
Year
2026
Date
26 April
Shift
Morning Shift
Subject
Physics
Chapter
Semiconductors

MHT CET 2026 · 26 April · Morning Shift · Physics · Semiconductors

For two inputs A and B and output Y, the Boolean expression for NOR...

For two inputs A and B and output Y, the Boolean expression for NOR gate is

Options

  1. AY=A⋅B‾Y = \overline{A \cdot B}
  2. BY=A⋅B‾Y = A \cdot \overline{B}
  3. CY=A+B‾Y = \overline{A + B}
  4. DY=A‾+BY = \overline{A} + B

Correct answer

C. Y=A+B‾Y = \overline{A + B}

Step-by-step solution

A NOR gate is a combination of an OR gate followed by a NOT gate.

The Boolean expression for an OR gate with inputs AA and BB is Y′=A+BY' = A + B.

Passing this output through a NOT gate gives the final output Y=Y′‾Y = \overline{Y'}.

Therefore, the Boolean expression for a NOR gate is Y=A+B‾Y = \overline{A + B}.

Answer: Y=A+B‾Y = \overline{A + B}
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