2nd Year Physics Chapter 18 Online MCQ Test for 12th Class Physics Chapter 18 (Electronics)

ICS Part 2 Physics
Chapter 18 Test

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Physics ICS Part 2 Chapter 18 Online MCQ's Test

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Question # 1

A two inputs NAND gat with inputs a and b has an output '0' if.

Question # 2

Truth table of logic function.

Question # 3

An expression for gain of an inverting amplifier is

Question # 4

Pulsating output of full wave rectifier can be made smooth by using circuit called.

Question # 5

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

Question # 6

LDR becomes necessary when op amp is used as a

Question # 7

Output resistance of an op amp is

Question # 8

The impurity in the germinium is usually in the ratio of

Question # 9

The P.D develop in case of germanium is:

Question # 10

Reverse current flows due to

Question # 11

Improper bisting of a transistor circiut produces:

Question # 12

A transistor has parts:

Question # 13

Transistors are made from

Question # 14

Rectification is the process of converting.

Question # 15

When a PN-Junction is reverse biased the depletion region is.

Question # 16

The gate, which changes the logic level to its opposite level is called

Question # 17

Most of the electrons in the base of an NPN transistor flow:

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ICS Part 2 Physics Chapter 18 Online Test MCQ's

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Photo diode is used for detection of.
A. Heat
B. Magnet
C. Current
D. Light
2 X=A+B is the mathematical notation for.
A. OR gate
B. NOR gate
C. NAND gate
D. AND gate
3 Which is not fundamental logic gate.
A. NOT
B. AND
C. OR
D. NAND
4 Conversion of A.C into D.C is called:
A. Compton effect
B. Rectification
C. Amplification 
D. Pair production
5 The circuit of full wave rectification consist of
A. Three diodes
B. Four diodes
C. Two diodes
D. One diode
6 The P.D develop in case of germanium is:
A. 0.3
B. 0.7
C. 0.5
D. 0.9
7 The open loop gain of the amplifier is order of.
A. 106
B. 105
C. 107
D. 103
8 An expression for gain of an inverting amplifier is
C. (R1R2)
D. None of these
9 A diode characteristic curve is a plot between
A. Current and time
B. Voltage and time
C. Voltage and current
D. Forward voltage and reverse voltage
10 The P.D develop in case of silicon is:
A. 0.7V
B. 0.3V
C. 0.5V
D. 0.9V

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