Class 10 Physics Chapter 5. We covered all the Class 10 Physics Chapter 5 MCQs in this post for free so that you can practice well for the exam.
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Class 10 Physics Chapter 5 Objective for Students
Avalanche breakdown is due to
(a) collision of minority charge carrier.
(b) increase in depletion layer thickness.
(c) decrease in depletion layer thickness.
(d) None of the above
Option b – increase in depletion layer thickness
The p-n junction diode is used as
(a) An amplifier
(b) A rectifier
(c) An oscillator
(d) A modulator
Option b – A rectifier
The full form of LED is
(a) Light Emitting Diode
(b) Light Emitting Device
(c) Light Enhancing Device
(d) Light Enhancing Diode
Option a – Light Emitting Diode
The reverse biasing in a p-n junction diode
(a) decreases the potential barrier.
(b) increases the potential barrier.
(c) increases the number of minority charge carriers.
(d) increases the number of majority charge carriers.
Option b – increases the potential barrier
In a p-n junction, avalanche current flows in the circuit when biasing is
(a) forward
(b) reverse
(c) zero
(d) excess
Option b – reverse
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