1
JEE Main 2023 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The output waveform of the given logical circuit for the following inputs A and B as shown below, is :

JEE Main 2023 (Online) 30th January Morning Shift Physics - Semiconductor Question 31 English

A
JEE Main 2023 (Online) 30th January Morning Shift Physics - Semiconductor Question 31 English Option 1
B
JEE Main 2023 (Online) 30th January Morning Shift Physics - Semiconductor Question 31 English Option 2
C
JEE Main 2023 (Online) 30th January Morning Shift Physics - Semiconductor Question 31 English Option 3
D
JEE Main 2023 (Online) 30th January Morning Shift Physics - Semiconductor Question 31 English Option 4
2
JEE Main 2023 (Online) 29th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

For the given logic gates combination, the correct truth table will be

JEE Main 2023 (Online) 29th January Evening Shift Physics - Semiconductor Question 30 English

A
JEE Main 2023 (Online) 29th January Evening Shift Physics - Semiconductor Question 30 English Option 1
B
JEE Main 2023 (Online) 29th January Evening Shift Physics - Semiconductor Question 30 English Option 2
C
JEE Main 2023 (Online) 29th January Evening Shift Physics - Semiconductor Question 30 English Option 3
D
JEE Main 2023 (Online) 29th January Evening Shift Physics - Semiconductor Question 30 English Option 4
3
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following statement is not correct in the case of light emitting diodes?

A. It is a heavily doped p-n junction.

B. It emits light only when it is forward biased.

C. It emits light only when it is reverse biased.

D. The energy of the light emitted is equal to or slightly less than the energy gap of the semiconductor used.

Choose the correct answer from the options given below:

A
A
B
B
C
C and D
D
C
4
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
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