1
JEE Main 2025 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Which of the following circuits represents a forward biased diode?

JEE Main 2025 (Online) 22nd January Morning Shift Physics - Semiconductor Question 16 English

Choose the correct answer from the options given below:

A
(C) and (E) only
B
(A) and (D) only
C
(B), (D) and (E) only
D
(B), (C) and (E) only
2
JEE Main 2024 (Online) 9th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
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JEE Main 2024 (Online) 9th April Evening Shift Physics - Semiconductor Question 29 English

In the truth table of the above circuit the value of X and Y are :

A
1, 1
B
0, 1
C
1, 0
D
0, 0
3
JEE Main 2024 (Online) 9th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
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The $$I$$-$$V$$ characteristics of an electronic device shown in the figure. The device is :

JEE Main 2024 (Online) 9th April Evening Shift Physics - Semiconductor Question 30 English

A
a solar cell
B
a transistor which can be used as an amplifier
C
a diode which can be used as a rectifier
D
a zener diode which can be used as a voltage regulator
4
JEE Main 2024 (Online) 9th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A light emitting diode (LED) is fabricated using GaAs semiconducting material whose band gap is $$1.42 \mathrm{~eV}$$. The wavelength of light emitted from the LED is :

A
1243 nm
B
875 nm
C
650 nm
D
1400 nm
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