1
JEE Main 2020 (Online) 5th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
With increasing biasing voltage of a photodiode, the photocurrent magnitude :
A
Increases initially and after attaining certain value, it decreases
B
Increases linearly
C
Increases initially and saturates finally
D
Remains constant
2
JEE Main 2020 (Online) 4th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Identify the operation performed by the circuit given below : JEE Main 2020 (Online) 4th September Evening Slot Physics - Semiconductor Question 123 English
A
AND
B
NAND
C
OR
D
NOT
3
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Take the breakdown voltage of the
zener diode used in the given circuit as 6V.
For the input voltage shown in figure below,
the time variation of the output voltage is:
(Graphs drawn are schematic and not to scale) JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 128 English
A
JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 128 English Option 1
B
JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 128 English Option 2
C
JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 128 English Option 3
D
JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 128 English Option 4
4
JEE Main 2020 (Online) 3rd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If a semiconductor photodiode can detect a photon with a maximum wavelength of 400 nm, then its band gap energy is :

Planck’s constant h = 6.63 $$ \times $$ 10–34 J.s. Speed of light c = 3 $$ \times $$ 108 m/s
A
1.5 eV
B
2.0 eV
C
3.1 eV
D
1.1 eV
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