1
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Statement I : When a Si sample is doped with Boron, it becomes P type and when doped by Arsenic it becomes N-type semi conductor such that P-type has excess holes and N-type has excess electrons.

Statement II : When such P-type and N-type semi-conductors, are fused to make a junction, a current will automatically flow which can be detected with an externally connected ameter.

In the light of above statements, choose the most appropriate answer from the options given below

A
Statement I is incorrect but statement II is correct
B
Both Statement I and statement II are correct
C
Statement I is correct but statement II is incorrect
D
Both Statement I and Statement II are incorrect
2
JEE Main 2023 (Online) 25th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Photodiodes are used in forward bias usually for measuring the light intensity.

Reason R : For a p-n junction diode, at applied voltage V the current in the forward bias is more than the current in the reverse bias for $$\mathrm{|{V_z}| > \pm v \ge |{v_0}|}$$ where $$\mathrm{v_0}$$ is the threshold voltage and $$\mathrm{V_z}$$ is the breakdown voltage.

In the light of the above statements, choose the correct answer from the options given below

A
Both A and R are true but R is NOT the correct explanation of A
B
A is true but R is false
C
Both A and R are true and R is the correct explanation of A
D
A is false but R is true
3
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

JEE Main 2023 (Online) 24th January Evening Shift Physics - Semiconductor Question 26 English

The logic gate equivalent to the given circuit diagram is :

A
NOR
B
OR
C
NAND
D
AND
4
JEE Main 2023 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Photodiodes are preferably operated in reverse bias condition for light intensity measurement.

Reason R : The current in the forward bias is more than the current in the reverse bias for a $$p-n$$ junction diode.

In the light of the above statements, choose the correct answer from the options given below :

A
Both A and R are true and R is the correct explanation of A
B
A is false but R is true
C
A is true but R is false
D
Both A and R are true but R is NOT the correct explanation of A
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