1
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
For extrinsic semiconductors; when doping level is increased;
A
Fermi-level of both p-type and n-type semiconductors will go upward for T > TFK and downward for T < TFK, where TF is Fermi temperature.
B
Fermi-level of p-type semiconductor will go upward and Fermi-level of n-type semiconductors will go downward
C
Fermi-level of p and n-type semiconductors will not be affected.
D
Fermi-level of p-type semiconductors will go downward and Fermi-level of n-type semiconductor will go upward.
2
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The truth table for the following logic circuit is :

JEE Main 2021 (Online) 25th February Evening Shift Physics - Semiconductor Question 101 English
A
JEE Main 2021 (Online) 25th February Evening Shift Physics - Semiconductor Question 101 English Option 1
B
JEE Main 2021 (Online) 25th February Evening Shift Physics - Semiconductor Question 101 English Option 2
C
JEE Main 2021 (Online) 25th February Evening Shift Physics - Semiconductor Question 101 English Option 3
D
JEE Main 2021 (Online) 25th February Evening Shift Physics - Semiconductor Question 101 English Option 4
3
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
A 5V battery is connected across the points X and Y. Assume D1 and D2 to be normal silicon diodes. Find the current supplied by the battery if the +ve terminal of the battery is connected to point X.

JEE Main 2021 (Online) 25th February Morning Shift Physics - Semiconductor Question 103 English
A
$$ \sim $$ 0.5 A
B
$$ \sim $$ 1.5 A
C
$$ \sim $$ 0.43 A
D
$$ \sim $$ 0.86 A
4
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 106 English
The logic circuit shown above is equivalent to :
A
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 106 English Option 1
B
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 106 English Option 2
C
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 106 English Option 3
D
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 106 English Option 4
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