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

Conversion of A.C into D.C is called:

Question # 2

The p-n junction in which p side is connected to+ive and n-side is -ve the junction is said to be:

Question # 3

OR gate is represented by:

Question # 4

In photovoltaic cell, current is directly proportional to.

Question # 5

The input resistance of an op amplifier is.

Question # 6

NAND gate represented by:

Question # 7

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

Question # 8

Output resistance of an op amp is

Question # 9

Transistors are made from

Question # 10

A light emitting diode emits light only when

Question # 11

A.C. can be converted into D.C. by

Question # 12

For rectification we use.

Question # 13

A diode characteristics curve is a plot between

Question # 14

The symbol of p-n-p transistor is

Question # 15

The term invertor is used for.

Question # 16

The gain of transistor amplifier depends upon

Question # 17

The chargeless region after formation of Pn junction is called:

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 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)
2 Which is not fundamental logic gate.
A. NOT
B. AND
C. OR
D. NAND
3 Greater concentration of impurity is added in.
A. Base
B. Emitter
C. Collector
D. LED
4 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
5 The central region of a transistor is called.
A. Emitter
B. Collector
C. Base
D. Neutral
6 The average gap for Germanium at 0K is
A. 1.12 ev
B. 0.02 ev
C. 6.72 ev
D. 7.2 ev
7 The P.D develop in case of germanium is:
A. 0.3
B. 0.7
C. 0.5
D. 0.9
8 OR gate is represented by:
A. X = A+B
B. X=A.B
C. X=A+B
D. X=A.B
9 Which one has greater cone of impurity among all:
A. Emitter
B. Base
C. Collector
D. All are pure
10 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

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