2. Solved Papers
  3. NEET
  4. Physics
  5. Semiconducting Devices

NEET Physics Semiconducting Devices NEET PYQ-Semiconducting Devices

  • question_answer
    The correct Boolean operation represented by the circuit diagram drawn is:              [NEET 2019]

    A)  NAND

    B)       NOR

    C)  AND   

    D)       OR

    Correct Answer: A

    Solution :

    [a] LED glows when Both switches are OFF if are one is ON or both ON, LED will be short and becomes OFF
               
    A B Y(LED)
    0 OFF 0 (OFF) 1 (ON)
    0 (OFF) 1 (ON) 1 (ON)
    1 (ON) 0 (OFF) 1 (ON)
    1 (ON) 1 (ON) 0 (OFF)
    \[y=\text{(}\overline{\text{AB}}\text{)}=NAND\]


You need to login to perform this action.
You will be redirected in 3 sec spinner