Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Dual Nature of Radiation
MCQ (Single Correct Answer)
Semiconductor Devices and Logic Gates
MCQ (Single Correct Answer)
Communication Systems
MCQ (Single Correct Answer)
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 19 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
COMEDK Subjects