1
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Which of the following gate give the similar output as the output of circuit diagram shown in the figure?

COMEDK 2022 Physics - Semiconductor Devices and Logic Gates Question 15 English

A
AND gate
B
OR gate
C
NOR gate
D
NAND gate
2
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Choose the incorrect statements.

A
Silicon is used in the fabrication of LED.
B
LED works on the principle of electroluminescence.
C
LED is a power efficient device.
D
LED is fabricated with direct band gap semiconductor.
3
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Find the logic gate, when both the inputs are high but the output is low and vice-versa.

A
AND
B
OR
C
NAND
D
NOR
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

What is the minimum band-gap of the LED diode?

A
1.5 eV
B
1.7 eV
C
1.8 eV
D
0.8 eV
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