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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ICS Part 2 Physics Chapter Wise Test
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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 18 Online MCQ's Test"

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Physics ICS Part 2 Chapter 18 Online MCQ's Test

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Question # 1

For automatic Switching of streetlight, the op amplifier is used as.

Question # 2

The chargeless region after formation of Pn junction is called:

Question # 3

The colour of light emitted by a LED depends on.

Question # 4

For rectification we use.

Question # 5

A diode characteristics curve is a plot between

Question # 6

Which device is used as a rectifier?

Question # 7

The reverse saturation current in a PN junction diode is only due to:

Question # 8

Logic gate can control some physical parameters like.

Question # 9

Which component of the transistor has greater contrition of impurity.

Question # 10

Photodiode is used for:

Question # 11

The resistance between the inverting (-) and non inverting inputs is called Input resistance and is the order of.

Question # 12

The ratio of potential barriers of Ge to Si at room temperatrue is.

Question # 13

The semi conductor diode has the property of

Question # 14

The mathematical symbol for NOR operation is

Question # 15

In photovoltaic cell, current is directly proportional to.

Question # 16

A transistor has parts:

Question # 17

In case of op-amp as an inverting amplifier, V+ - V- = 0, this is because

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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 Photodiode is used for:
A. Detection of current
B. Detection of heat
C. Detection of light
D. Both a & b
2 The impurity in the germinium is usually in the ratio of
A. 1:106
B. 1:104
C. 1:108
D. 1:1010
3 Greater concentration of impurity is added in.
A. Base
B. Emitter
C. Collector
D. LED
4 Transistor was discovered by
A. Young
B. Curie
C. John Bardeen
D. Shale's
5 The mathematical symbol for NOR operation is
B. X = A . B
C. X = A + D
6 LDR becomes necessary when op amp is used as a
A. Night switch
B. Inverter
C. Comparator
D. Rectifier
7 Automatic function of street light can be done by the use of.
A. Inductor
B. Rectifier
C. Comparator
D. emf
8 Depletion region carries.
A. -ve charge
B. +ve charge
C. Ions
D. No charge
9 Base of transistor is of order:
A. 10-11m
B. 106m
C. 10-8m
D. 10-6m
10 In full wave rectification number of diodes required are equal to.
A. 2
B. 3
C. 4
D. 5

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