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

Depletion region carries.

Question # 2

Greater concentration of impurity is added in.

Question # 3

The impurity in the germinium is usually in the ratio of

Question # 4

The average gap for Germanium at 0K is

Question # 5

The output of two input is zero only when its.

Question # 6

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

Question # 7

In a transistor, collector current is controlled by:

Question # 8

The input resistance of an op amplifier is.

Question # 9

An expression for gain of an inverting amplifier is

Question # 10

The ratio Beta in transistor is called.

Question # 11

NAND gate represented by:

Question # 12

The P.D develop in case of germanium is:

Question # 13

The output voltage of a rectifier is.

Question # 14

Which factor does not affect the conductivity of PN-Junction diode.

Question # 15

Photo diode detects.

Question # 16

In case of reverse biasing, current is flown due to:

Question # 17

For normal transistor the emitter current can be given by

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18th Chapter

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 For rectification we use.
A. Transformer
B. Diode
C. Choke
D. Generator
2 The output of two input is zero only when its.
A. Both inputs are zero
B. Either input is zero
C. Both inputs are one
D. Either input is one
3 Conversion of A.C into D.C is called:
A. Compton effect
B. Rectification
C. Amplification 
D. Pair production
4 NAND gate represented by:
A. X = A. B
B. X = A+B
C. X= A.B
D. X=|A+B|
5 A two inputs NAND gat with inputs a and b has an output '0' if.
A. B is zero
B. A is zero
C. Both A and B are 1
D. Both A and B are '0'
6 Photo diode is used for detection of.
A. Heat
B. Magnet
C. Current
D. Light
7 Photodiode is used for:
A. Detection of current
B. Detection of heat
C. Detection of light
D. Both a & b
8 The symbol of p-n-p transistor is
9 Which diode works at reverse biasing.
A. LED
B. Photo voltaic cell
C. Photo diode
D. Silicon diode
10 In a transistor, collector current is controlled by:
A. Collector voltage
B. Base current
C. Collector resistance
D. All of the above

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