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1
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
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The output of the given combination gates represents :

JEE Main 2021 (Online) 17th March Morning Shift Physics - Semiconductor Question 123 English
A
AND Gate
B
NOR Gate
C
NAND Gate
D
XOR Gate
2
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The following logic gate is equivalent to :

JEE Main 2021 (Online) 16th March Evening Shift Physics - Semiconductor Question 124 English
A
NOR Gate
B
NAND Gate
C
OR Gate
D
AND Gate
3
JEE Main 2021 (Online) 26th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Draw the output signal Y in the given combination of gates.

JEE Main 2021 (Online) 26th February Evening Shift Physics - Semiconductor Question 128 English
A
JEE Main 2021 (Online) 26th February Evening Shift Physics - Semiconductor Question 128 English Option 1
B
JEE Main 2021 (Online) 26th February Evening Shift Physics - Semiconductor Question 128 English Option 2
C
JEE Main 2021 (Online) 26th February Evening Shift Physics - Semiconductor Question 128 English Option 3
D
JEE Main 2021 (Online) 26th February Evening Shift Physics - Semiconductor Question 128 English Option 4
4
JEE Main 2021 (Online) 26th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
LED is constructed from Ga-As-P semiconducting material. The energy gap of this LED is 1.9 eV. Calculate the wavelength of light emitted and its colour.

[h = 6.63 $$\times$$ 10$$-$$34 Js and c = 3 $$\times$$ 108 ms$$-$$1]
A
654 nm and orange colour
B
654 nm and red colour
C
1046 nm and red colour
D
1046 nm and blue colour
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