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 sensor of light is.

Question # 2

OR gate is represented by:

Question # 3

The gain of transistor amplifier depends upon

Question # 4

LDR becomes necessary when op amp is used as a

Question # 5

In case of reverse biasing, current is flown due to:

Question # 6

Which device is used as a rectifier?

Question # 7

Photo diode detects.

Question # 8

The colour of light emitted by a LED depends on.

Question # 9

Output resistance of an op amp is

Question # 10

An expression for gain of an inverting amplifier is

Question # 11

The potential difference across depletion region in case of Si is

Question # 12

A diode characteristic curve is a plot between

Question # 13

A two inputs NAND gat with inputs a and b has an output '0' if.

Question # 14

_______ is the building block of every electronic circuit.

Question # 15

Automatic function of street light can be done by the use of.

Question # 16

Which is not fundamental logic gate.

Question # 17

A diode characteristics curve is a plot between

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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 OR gate is represented by:
A. X = A+B
B. X=A.B
C. X=A+B
D. X=A.B
2 Which factor does not affect the conductivity of PN-Junction diode.
A. Doping
B. Temperature
C. Voltage
D. Pressure
3 The potential difference across the depletion region of germanium is.
A. 0.3 V
B. 0.5 V
C. 0.7 V
D. 0.8 V
4 Which diode works at reverse biasing.
A. LED
B. Photo voltaic cell
C. Photo diode
D. Silicon diode
5 The use of LDR is in the circuit of.
A. Logic gate
B. Rectifier
C. Oscillator
D. High Switch
6 For automatic Switching of streetlight, the op amplifier is used as.
A. Inductor
B. Converter
C. Comparator
D. Thermistor
7 The output voltage of a rectifier is.
A. Smooth
B. Pulsating
C. Alternating
D. Per featly direct
8 The semi conductor diode has the property of
A. Two way conduction
B. Zero conduction
C. One way conduction
D. Amplification
9 Depletion region carries.
A. -ve charge
B. +ve charge
C. Ions
D. No charge
10 A diode characteristics curve is a plot between
A. Current and resistance
B. Voltage and time
C. Voltage and current
D. Current and time

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