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

For rectification we use.

Question # 2

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

Question # 3

Reverse current flows due to

Question # 4

Output resistance of an op amp is

Question # 5

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

Question # 6

Doping is made comparatively larger in

Question # 7

Rectification is the process of converting.

Question # 8

Which device is used as a rectifier?

Question # 9

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

Question # 10

In photovoltaic cell, current is directly proportional to.

Question # 11

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

Question # 12

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

Question # 13

The device which is used as amplifier and works with the negative feedback is.

Question # 14

The average gap for Germanium at 0K is

Question # 15

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

Question # 16

The potential difference across the depletion region of germanium is.

Question # 17

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

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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 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
2 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
3 The chargeless region after formation of Pn junction is called:
A. Free region
B. Depletion region
C. Field region
D. U.V region
4 A photo diode can turn its current ON and OFF in
A. Micro seconds
B. Mega seconds
C. Nano seconds
D. Mili seconds
5 Logic gate can control some physical parameters like.
A. Temperature, Pressure
B. Resistance, Inductance
C. Capacitance, Impedance
D. Current, voltage
6 In case of op-amp as an inverting amplifier, V+ - V- = 0, this is because
A. Open gain loop is very low
B. Closed loop gain is very high
C. Open loop gain is very high
D. Both (a) and (a)
7 The colour of light emitted by a LED depends on.
A. It forward biased
B. Its reverse biased
C. Unbiased
D. None of these
8 Transistor was invented by:
A. Bardeen
B. Micheal faraday
C. Lenz
D. Newton
9 The sensor of light is.
A. Transistor
B. LED
C. Diode
D. Light dependent resistance
10 A.C. can be converted into D.C. by
A. An oscillator
B. Detector
C. An amplifier
D. Rectifier

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