PHYSICS 2nd Year MCQs Chapter No.7 ELECTRONICS Test No.1

Physics MCQs 2nd Year Chapter No.7 ELECTRONICS Test No.1, FSc, Grade 12, Second Year Multiple Choice Questions, Medical College ( MDCAT ) , ECAT & University Admission Entry Test Exams Online Preparation, Chapter Wise Questions Answers Quiz Notes in Pdf Download, All Old Board Papers included, All Queries reply within 24 Hours. Click here to Contact us for any Query/Question regarding Exams.

PHYSICS – 2nd Year
Chapter Name : ELECTRONICS
Chapter No. 7  [ Test No.1 ]
Multiple Choice Questions
Note : All MCQ’s selected in this test are from OLD F.Sc. board , UHS and PMC(Pakistan Medical Commission) Islamabad Papers.


Book Name :  PHYSICS
Chapter No. 7 ( Test No. 1 )
Chapter Name : ELECTRONICS 
Total MCQ from Text Book :  107
Book Version  :

Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ’s
Exam conduct By : Inter Boards of Sindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade  : 12 ( F.Sc. Intermediate)
Total Marks : 107
Total Time :   107 minutes

Created on By user



1 / 107

A single silicon photovoltaic cell produces a small voltage of

2 / 107

The output of NAND gate isso when:

3 / 107

For normal operation of transistor, the battery:

4 / 107

A complete amplifier circuit made on a silicon chip and enclosed in a small capsule is called:

5 / 107

When the p-n junction is forward biased, current flows through the junction due to

6 / 107

The valve of potential barrier for silicon at room temperature is:

7 / 107

The gate which perform the operation of inversion or complementation is called:

8 / 107

Automatic functioning of street lights can be done by the use of:

9 / 107

If R1 = infinity and R2 = 0, then gain of non-inverting amplifier is:

10 / 107

A system which deals with quantities or variables which has two discrete values or states is called:

11 / 107

In full wave rectification:

12 / 107

The central region of the transistor is known as:

13 / 107

When we are using op-amp as comparator and V- < V+ then:

14 / 107

Potential barrier in a diode:

15 / 107

Due to high value of the input resistance, practically, the value of the current which flows between the input terminals is:

16 / 107

p-n junction after some development can be used as:

17 / 107

Which one of the following is the most, important building block of any complex electronic circuit?

18 / 107

In describing functions of digital systems, a OFF bulb will be described as:

19 / 107

Photodiodes can be used:

20 / 107

In a half wave rectifier, the diode conducts:

21 / 107

The SI unit of voltage gain is:

22 / 107

A diode characteristics curve is a plot between:

23 / 107

Digital system can be best carried if it is represented by binary digits:

24 / 107

The value of input resistance of op-amp is of the order of:

25 / 107

When the p-n junction is reverse biased, current flows through it, is of the order of:

26 / 107

Conversion of low AC voltage into high.AC voltage is called:

27 / 107

The open loop gain of op-amp is of the order of:

28 / 107

When we are using op-amp as comparator and V- > V+ then:

29 / 107

For the normal operation of transistor, the emitter base junction is always:

30 / 107

When the p-n junction is forward biased its resistance is in:

31 / 107

In n-p-n transistor, the current flows in the direction from:

32 / 107

The colour of light emitted by a LED depends on:

33 / 107

In reverse biased stale an ideal p-n junction offers:

34 / 107

The value of potential barrier (potential difference) for germanium (Ge) at room temperature is:

35 / 107

Conversion of only one half of an A.C. into D.C. is called:

36 / 107

A signal appears after amplification, at the output terminal without any change of phase, if it is applied at:

37 / 107

An expression for open loop gain of an op-amp is given as:

38 / 107

In p-n-p transistor, the current flows in the direction from:

39 / 107

The output of AND gate will be one when:

40 / 107

When a p-n junction is reverse biased, the depletion region is:

41 / 107

The value of output resistance of op-amp is of the order of:

42 / 107

NOR gate is used to invert the output of:

43 / 107

The output of an OR gate is 1 when:

44 / 107

Depletion region charge carries:

45 / 107

The negative sign in the gain' of an inverting amplifier indicates that the output signal is:

46 / 107

The branch of physics which deals with electrons and their controlled flow through various semi conductors devices is called:

47 / 107

When the p-n junction is reverse biased, its resistance is of the order of:

48 / 107

The gain G of op-amp, only depends upon:

49 / 107

The output voltage of a rectifier is:

50 / 107

The fundamental equation for all transistor are:

51 / 107

The current gain 'β' of a transistor for CF, -transistor is given by:

52 / 107

The circuit which is used to smooth the output voltage of the full wave rectifier is known as:

53 / 107

Which component of the transistor has greater concentration of impurity?

54 / 107

The integrated amplifier, which is used to perform mathematical operations electronically is known as:

55 / 107

A transistor can be used-as a switch when:

56 / 107

Which one of the following are called fundamental gates?

57 / 107

Boolean algebra is based on which of the following operations:

58 / 107

A transistor is a combination of:

59 / 107

In photovoltaic cell, current is directly proportional to the:

60 / 107

Light emitting diodes (LED) are made from special semi-conductors such, as:

61 / 107

The resistance between inverting (-) and non-inverting (+) terminal of the op-amp is known as:

62 / 107

When op-amp is used as inverting amplifier, which of the input terminal is grounded:

63 / 107

The open loop gain of the op-amp is:

64 / 107

The value of current gain of n-p-n transistor is of the order of:

65 / 107

Rectification process needs:

66 / 107

In forward biased start, a p-n junction offers:

67 / 107

If reverse current of a reverse biased junction is increased. to a maximum value then:

68 / 107

The reverse current in a p-n junction flows due to:

69 / 107

The thickness of the base is of the order of:

70 / 107

The process of converting an alternating current (A.C) into a direct current (D.C.) is known as:

71 / 107

In semi-conductor diode, p-type end is usually referred as:

72 / 107

The voltage gain of the common emitter n-p-n transistor as an amplifier is:

73 / 107

Whenever a p-n junction is formed, a chargeless region is formed around the junction, which is called as:

74 / 107

The number of valence electrdns in Si or Ge are:

75 / 107

Photovoltaic cell converts:

76 / 107

In p-n junction if p-side is at positive potential and n-side is at negative potential, then this junction is said to be

77 / 107

Which one of the following gate is called inverter?

78 / 107

Which one of the following diode is used for detection of light?

79 / 107

For the normal operation of transistor, the collector-base junction is always:

80 / 107

The voltage gain of an amplifier is written as:

81 / 107

Rectification is done by:

82 / 107

The output of AND gate will be zero when:

83 / 107

Holes can exist in:

84 / 107

The output of NOR gate is 1 when:

85 / 107

When the p-n junction is forward biased, current flows through it is of the order of:

86 / 107

The potential difference setup across the depletion region is called:

87 / 107

Transistor was discovered by:

88 / 107

Transistors with various combinations are widely used as switches in:

89 / 107

Gain of non-inverting amplifier is given by:

90 / 107

Gain of an inverting amplifier is given by:

91 / 107

An op-amp can be used as a:

92 / 107

LDR is abbreviated for:

93 / 107

Transistors are made from:

94 / 107

Photovoltaic cell is formed from:

95 / 107

By rectification process the current received across the load resistance R is:

96 / 107

Photodiode is always connected in:

97 / 107

The electronic circuits which implement the various logic operations are known as:

98 / 107

The resistance between Output terminal, and ground of the amplifier is known as:

99 / 107

Photovoltaic panels are generally used in:

100 / 107

In transistor, which one is very thin?

101 / 107

A diode cannot be used as:

102 / 107

The forward resistance of the p-n junction is expressed as:

103 / 107

Special algebra used in digital system is called:

104 / 107

During the negative half-cycle of the rectification process, the diode is said to behave as:

105 / 107

Semi-conductor materials in periodic table are located in:

106 / 107

In general most of the electrical circuits make use of:

107 / 107

When an n-type material is sandwiched between two p-type materials, then the transistor is

Your score is

The average score is 36%


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