Back to SEMI CONDUCTOR DEVICES
JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES
1
Medium
1 of 1
Understanding
+4 | -1
Which one of the following statement is not correct in the case of light emitting diodes?
A) It is a heavily doped 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 then the energy gap of the semiconductor used.
Choose the correct answer from the options given below:
A) It is a heavily doped 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 then the energy gap of the semiconductor used.
Choose the correct answer from the options given below:
View answer and explanation
Correct option: B
Option B (C) is correct because LEDs emit light only when forward biased, not reverse biased.
More Questions from SEMI CONDUCTOR DEVICES
Practice All Chapter MCQs →
A PN-junction has a thickness of the order of
In a transistor the base is the -region. Its width relative to the -region is
A solid reflects incident light and its electrical conductivity decreases with temperature. The binding in this solid is
An alternating current can be converted into direct current by a
A N–P–N transistor is used in inverse active mode of operation then its emitter base junction should be in
In the case of constants of a transistor