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

The forbidden energy gap for Ge crystal at 0K is

A
0.71 eV
B
2.57 eV
C
6.57 eV
D
0.071 eV
2
KCET 2022
MCQ (Single Correct Answer)
+1
-0

Which logic gate is represented by the following combination of logic gates?

KCET 2022 Physics - Semiconductor Devices and Logic Gates Question 10 English

A
NAND
B
AND
C
NOR
D
OR
3
KCET 2021
MCQ (Single Correct Answer)
+1
-0

The circuit given represents which of the logic operations?

KCET 2021 Physics - Semiconductor Devices and Logic Gates Question 6 English

A
OR
B
AND
C
NOT
D
NOR
4
KCET 2021
MCQ (Single Correct Answer)
+1
-0

Identify the incorrect statement.

A
When a $$p$$-$$n$$ junction diode is forward biased, then the width of the depletion region decreases.
B
When a $$p$$-$$n$$ junction diode is reverse biased, the barrier potential increases.
C
A photodiode is operated in the reverse bias.
D
An LED is a lightly doped $$p$$-$$n$$ junction diode which emits spontaneous radiation of forward biasing.
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