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

Base of transistor is of order:

Question # 2

Which component of the transistor has greater contrition of impurity.

Question # 3

In a transistor, collector current is controlled by:

Question # 4

Which diode works at reverse biasing.

Question # 5

In a transistor, collector current is controlled by:

Question # 6

LDR becomes necessary when op amp is used as a

Question # 7

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

Question # 8

Output resistance of an op amp is

Question # 9

A diode characteristics curve is a plot between

Question # 10

X=A+B is the mathematical notation for.

Question # 11

Photo diode is used for detection of.

Question # 12

The output of two input is zero only when its.

Question # 13

A transistor has parts:

Question # 14

The use of LDR is in the circuit of.

Question # 15

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

Question # 16

The output voltage of a rectifier is.

Question # 17

Depletion region carries.

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The semi conductor diode has the property of
A. Two way conduction
B. Zero conduction
C. One way conduction
D. Amplification
2 The potential difference across depletion region in case of Si is
A. 0.6 volt
B. 0.9 volt
C. 0.7 volt
D. 0.2 volt
3 Light emitting diodes are made from semiconductors.
A. Silicon
B. Germanium
C. Carbon
D. Gallium arsenide
4 The potential barrier for silicon is.
A. 0.7 V
B. 0.5 V
C. 0.3 V
D. 0.9 V
5 The gain of transistor amplifier depends upon
A. Resistance connected with collector
B. Resistance connected with base voltage
C. Input voltage
D. Output voltage
6 The sensor of light is.
A. Transistor
B. LED
C. Diode
D. Light dependent resistance
7 The P.D develop in case of silicon is:
A. 0.7V
B. 0.3V
C. 0.5V
D. 0.9V
8 The ratio Beta in transistor is called.
A. Voltage gain
B. Emitter gain
C. Current gain
D. Nuclear gain
9 A transistor has parts:
A. 2
B. 3
C. 4
D. 5
10 Conversion of A.C into D.C is called:
A. Compton effect
B. Rectification
C. Amplification 
D. Pair production

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