12th class Physics chapter 18 online mcq test with answers for ICS part 2 Physics Chapter 18 (Electronics)

Physics ICS Part 2 Chapter 18 Online MCQ's Test

Sr. #	Questions	Answers Choice
1	The gain of transistor amplifier depends upon	Resistance connected with collector Resistance connected with base voltage Input voltage Output voltage
2	A device which converts low voltage or current to high voltage or current is called.	Transformer AC generator Amplifier Rectifier
3	The sensor of light is.	Transistor LED Diode Light dependent resistance
4	Doping is made comparatively larger in	Emitter Base Collector P -type semi conductor
5	Which component of the transistor has greater contrition of impurity.	Base Emitter Collector Emitter and collector
6	The central region of a transistor is called.	Emitter Collector Base Neutral
7	Transistors are made from	Plastics Metals Insulator Doped semi conductors
8	Transistor was discovered by	Young Curie John Bardeen Shale's
9	The ratio Beta in transistor is called.	Voltage gain Emitter gain Current gain Nuclear gain
10	Photo diode detects.	Visible light Radio waves X rays All of them
11	A photo diode can turn its current ON and OFF in	Micro seconds Mega seconds Nano seconds Mili seconds
12	Which diode works at reverse biasing.	LED Photo voltaic cell Photo diode Silicon diode
13	the number of terminals in a semiconductor diode are	2 3 4 5
14	Photo diode is used for detection of.	Heat Magnet Current Light
15	The colour of light emitted by a LED depends on.	It forward biased Its reverse biased Unbiased None of these
16	A light emitting diode emits light only when	Reverse biased Forward biased Unbiased None of these
17	Light emitting diodes are made from semiconductors.	Silicon Germanium Carbon Gallium arsenide

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