1
JEE Main 2022 (Online) 26th June Morning Shift
+4
-1

The I-V characteristics of a p-n junction diode in forward bias is shown in the figure. The ratio of dynamic resistance, corresponding to forward bias voltage of 2 V and 4 V respectively, is :

A
1 : 2
B
5 : 1
C
1 : 40
D
20 : 1
2
JEE Main 2022 (Online) 25th June Evening Shift
+4
-1

Identify the logic operation performed by the given circuit:

A
AND gate
B
OR gate
C
NOR gate
D
NAND gate
3
JEE Main 2022 (Online) 25th June Morning Shift
+4
-1

The photodiode is used to detect the optical signals. These diodes are preferably operated in reverse biased mode because :

A
fractional change in majority carriers produce higher forward bias current
B
fractional change in majority carriers produce higher reverse bias current
C
fractional change in minority carriers produce higher forward bias current
D
fractional change in minority carriers produce higher reverse bias current
4
JEE Main 2021 (Online) 1st September Evening Shift
+4
-1
In the given figure, each diode has a forward bias resistance of 30$$\Omega$$ and infinite resistance in reverse bias. The current I1 will be :

A
3.75 A
B
2.35 A
C
2 A
D
2.73 A
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