Questions
The circuit diagram shown here corresponds to the logic gate,
a
NAND
b
NOR
c
AND
d
OR
detailed solution
Correct option is B
Case-1 : A = 0, B = 0LED will glow∴ Y=11Case-2 : A = 0, B = 1No current will through LED∴ Y=0Case-3 : A = 1, B = 0Again no current will through LED∴ Y=0Case-4 : A = 1, B = 1Again Y = 0NOR gateTalk to our academic expert!
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An LED is constructed from a PN junction based on a certain semi-conducting material whose energy gap is 4 eV. Then the wavelength of the emitted light is
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