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MHT CET202620 April 2026Morning ShiftPhysicsSemiconductorsActual

The output Y of the following digital logic circuit will be '1' (one) for the inputs

Options

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

Correct answer

D. A = 1 , B = 1 , C = 1

Step-by-step solution

From the given logic circuit, the gates can be identified as follows: 1. A NOT gate with input A , giving output A . 2. An AND gate with inputs B and C , giving output B C . 3. An OR gate taking the outputs of the NOT and AND gates as inputs. The Boolean expression for the final output Y is: Y = A + B C For the output to be Y = 1 , either A = 1 (which means A = 0 ) or B C = 1 (which means B = 1 and C = 1 ). Since all given options have A = 1 , we have A = 0 . Thus, for Y = 1 , the condition B C = 1 must be satisfie

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