Second Year Physics Chapter 18 Online MCQ Test for 2nd Year Physics Chapter 18 Electronics Preparation

FSC Part 2 Physics
Chapter 18 Test

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Physics FSC Part 2 Chapter 18 Online MCQ's Test

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Question # 1

In photovoltaic cell, current is directly proportional to.

Question # 2

The input resistance of an op amplifier is.

Question # 3

Which is not fundamental logic gate.

Question # 4

The use of LDR is in the circuit of.

Question # 5

Transistor was discovered by

Question # 6

The sensor of light is.

Question # 7

An expression for gain of an inverting amplifier is

Question # 8

In a transistor, collector current is controlled by:

Question # 9

The circuit of full wave rectification consist of

Question # 10

Output resistance of an op amp is

Question # 11

The ratio Beta in transistor is called.

Question # 12

The p-n junction in which p side is connected to+ive and n-side is -ve the junction is said to be:

Question # 13

Light emitting diodes are made from semiconductors.

Question # 14

The output from a full wave rectifier is

Question # 15

A device which converts low voltage or current to high voltage or current is called.

Question # 16

When transistor are used in digital circuits they usually operate in the :

Question # 17

In full wave rectification number of diodes required are equal to.

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 When transistor are used in digital circuits they usually operate in the :
A. Active region
B. Break down region
C. Saturation & cutoff regions
D. Linear region
2 The impurity in the germinium is usually in the ratio of
A. 1:106
B. 1:104
C. 1:108
D. 1:1010
3 For automatic Switching of streetlight, the op amplifier is used as.
A. Inductor
B. Converter
C. Comparator
D. Thermistor
4 In a transistor, collector current is controlled by:
A. Collector voltage
B. Base current
C. Collector resistance
D. All of the above
5 The gate, which changes the logic level to its opposite level is called
A. NOR gate
B. AND gate
C. OR gate
D. NOT gate
6 Greater concentration of impurity is added in.
A. Base
B. Emitter
C. Collector
D. LED
7 A transistor has:
A. Two regions
B. Three regions
C. Single regions
D. Four regions
8 The semi conductor diode has the property of
A. Two way conduction
B. Zero conduction
C. One way conduction
D. Amplification
9 A device which converts low voltage or current to high voltage or current is called.
A. Transformer
B. AC generator
C. Amplifier
D. Rectifier
10 For rectification we use.
A. Transformer
B. Diode
C. Choke
D. Generator

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