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

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Physics ICS Part 2 Chapter 18 Online MCQ's Test

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Question # 1

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

Question # 2

The sensor of light is.

Question # 3

The potential difference across depletion region in case of Si is

Question # 4

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

Question # 5

In a certain circuit, IB = 40 µA, IC = 20 mA

Question # 6

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

Question # 7

The impurity in the germinium is usually in the ratio of

Question # 8

Which is not fundamental logic gate.

Question # 9

The circuit of full wave rectification consist of

Question # 10

A light emitting diode emits light only when

Question # 11

The output voltage of a rectifier is.

Question # 12

The gain of transistor amplifier depends upon

Question # 13

Rectification is the process of converting.

Question # 14

Which one has greater cone of impurity among all:

Question # 15

The open loop gain of the amplifier is order of.

Question # 16

Photo diode detects.

Question # 17

Transistor was discovered by

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The reverse saturation current in a PN junction diode is only due to:
A. Majority carriers
B. Minoritycarriers
C. Acceptor ions
D. Donor ions
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 Rectification is the process of converting.
A. D.C. into A.C.
B. A.C. in to D.C.
C. Low signal to high
D. High signal to low
4 The device which are required to convert various physical quantities into electric voltage are called.
A. Filters
B. Rectifiers
C. Amplifiers
D. Sensors
5 Pulsating output of full wave rectifier can be made smooth by using circuit called.
A. Filter
B. Amplifier
C. Resistor
D. Transistor
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 Which component of the transistor has greater contrition of impurity.
A. Base
B. Emitter
C. Collector
D. Emitter and collector
8 Truth table of logic function.
A. Summarize its output values only
B. Tabulates all its input conditions only
C. Display all its input and output possibility
D. Is not base on logic algebra
9 A diode characteristics curve is a plot between
A. Current and resistance
B. Voltage and time
C. Voltage and current
D. Current and time
10 Conversation of only one half of A.C. into D.C. is called.
A. Half wave amplification
B. Wave amplification
C. Half wave electrification
D. Half wave rectification

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