In the shown figure the focal length of ...

In the shown figure the focal length of equivalent system in the form of `((50x)/(13))` .Find the value of x.

NOR gate

OR gate

AND gate

XOR gate

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The correct Answer is:

OR gate

Gate-1 and gate-2 act as each gate NOT gate as each is input short. Hence, `y_(1)=barA` and `y_(2)=barB` are obtained. NOT `barA and barB` are the input for gate-3 and it act as NAND. Its truth table is given below.

which is similar to the OR gate.s truth table so it act as OR gate.

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