1
JEE Main 2020 (Online) 5th September Morning Slot
+4
-1
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
+4
-1
Identify the operation performed by the circuit given below :
A
AND
B
NAND
C
OR
D
NOT
3
JEE Main 2020 (Online) 4th September Morning Slot
+4
-1
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)
A
B
C
D
4
JEE Main 2020 (Online) 3rd September Evening Slot
+4
-1
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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