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

The potential difference across depletion region in case of Si is

Question # 2

Reverse current flows due to

Question # 3

Logic gate can control some physical parameters like.

Question # 4

For normal use:

Question # 5

The mathematical symbol for NOR operation is

Question # 6

Light emitting diodes are made from semiconductors.

Question # 7

Which is not fundamental logic gate.

Question # 8

Photo diode is used for detection of.

Question # 9

A diode characteristics curve is a plot between

Question # 10

The output voltage of a rectifier is.

Question # 11

The average gap for Germanium at 0K is

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

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

Question # 14

For normal transistor the emitter current can be given by

Question # 15

Output resistance of an op amp is

Question # 16

One use of a single p-n junction semiconductor in an electrical circuit is a

Question # 17

Transistors are made from

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The P.D develop in case of silicon is:
A. 0.7V
B. 0.3V
C. 0.5V
D. 0.9V
2 A transistor has:
A. Two regions
B. Three regions
C. Single regions
D. Four regions
3 Reverse current flows due to
A. Majority charge carriers
B. Minority charge carriers
C. Electrons
D. Holes
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 X=A+B is the mathematical notation for.
A. OR gate
B. NOR gate
C. NAND gate
D. AND gate
6 The circuit of full wave rectification consist of
A. Three diodes
B. Four diodes
C. Two diodes
D. One diode
7 Photo diode detects.
A. Visible light
B. Radio waves
C. X rays
D. All of them
8 When a PN-Junction is reverse biased the depletion region is.
A. Widened
B. Narrowed
C. Normal
D. None of these
9 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
10 Most of the electrons in the base of an NPN transistor flow:
A. Out of the base lead
B. Into the collector
C. Into the emit
D. Into the base supply

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