JEE Main 2016 · 3 Apr · Shift 1 · Physics Q29

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PhysicsSingle correct+4 / -1Question 29 of 90

Identify the semiconductor devices whose characteristics are given below, in the order (a), (b), (c), (d) :

Four characteristics: (a) I-V rising steeply in forward bias only; (b) I-V with forward conduction and a sharp reverse breakdown; (c) I-V curves in the dark and illuminated, the illuminated one shifted into the fourth quadrant; (d) resistance falling with intensity of light.

Simple diode, Zener diode, Solar cell, Light dependent resistance

Zener diode, Simple diode, Light dependent resistance, Solar cell

Solar cell, Light dependent resistance, Zener diode, Simple diode

Zener diode, Solar cell, Simple diode, Light dependent resistance

Answer and worked solution

Official answer: A

(a) conducts only in forward bias: a simple diode. (b) breaks down sharply in reverse: a Zener diode. (c) under light gives current in the fourth quadrant: a solar cell. (d) resistance falls with light intensity: an LDR.

Topics:Special diodes (LED, Zener, photodiode, solar cell)Semiconductors and p-n junction

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JEE Main 2016 · 3 Apr · Shift 1, Physics question 29