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

Conversation of only one half of A.C. into D.C. is called.

Question # 2

In a transistor, collector current is controlled by:

Question # 3

Depletion region carries.

Question # 4

Which one has greater cone of impurity among all:

Question # 5

The P.D develop in case of germanium is:

Question # 6

A diode characteristics curve is a plot between

Question # 7

Light emitting diodes are made from semiconductors.

Question # 8

During negative half cycle of A.c then p-n junction offers.

Question # 9

The ratio Beta in transistor is called.

Question # 10

Photodiode is used for:

Question # 11

Transistors are made from

Question # 12

Truth table of logic function.

Question # 13

For rectification we use.

Question # 14

The symbol of p-n-p transistor is

Question # 15

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

Question # 16

LDR becomes necessary when op amp is used as a

Question # 17

NAND gate represented by:

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FSC 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 Automatic function of street light can be done by the use of.
A. Inductor
B. Rectifier
C. Comparator
D. emf
2 The ratio Beta in transistor is called.
A. Voltage gain
B. Emitter gain
C. Current gain
D. Nuclear gain
3 The impurity in the germinium is usually in the ratio of
A. 1:106
B. 1:104
C. 1:108
D. 1:1010
4 The chargeless region after formation of Pn junction is called:
A. Free region
B. Depletion region
C. Field region
D. U.V region
5 Photo diode detects.
A. Visible light
B. Radio waves
C. X rays
D. All of them
6 The p-n junction in which p side is connected to+ive and n-side is -ve the junction is said to be:
A. Neutral
B. Forward biased
C. Reversed biased
D. None of above
7 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
8 For normal use:
A. Emitter base function is reversed biased
B. Collector base junction is reserved biased
C. Emitter base junction is forward biased
D. Both c and b
9 Photodiode is used for:
A. Detection of current
B. Detection of heat
C. Detection of light
D. Both a & b
10 Which device is used as a rectifier?
A. Capacitor
B. Transistor
C. Diode
D. Transformer

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