Physics FSC Part 2 Online MCQ's Test With Answers

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Physics FSC Part 2 Online MCQ's Test

Sr. # Questions Answers Choice
1 Minimum energy needed to escape an electron  ofrm metal surface is called: Threshold energy Threshold frequency Work function Work ability
2 The minimum frequency needed to emit an electron form metal surface is called: Work function Threshold frequency Quanta frequency All of above
3 The emission of electrons from metal surface when exposed to light is called: Compton effect Pair production Photoelectric effect None of above
4 The unit for Plank's constant is: Js<sup>-1</sup> Jm Js&nbsp; Jm<sup>2</sup>
5 Max planck received noble prize in: 1927 1932 1918 1914
6 The value of Stefan is constant is: 4.57 x 10<sup>-8</sup> m<sup>2</sup>k<sup>2</sup> 5.67 x10<sup>-8</sup> wm<sup>-2</sup>k<sup>-4</sup> 6.67x 10<sup>-11</sup> wm<sup>2</sup>k<sup>4</sup> 7.45 x &nbsp;10<sup>-9</sup> m<sup>2</sup> wk<sup>3</sup>
7 The value of Wien's constant: 2.9x10<sup>-3</sup>mk 2.19x10<sup>-7</sup>mk 3.18 x10<sup>6</sup> km<sup>-1</sup> 6.21 x 10<sup>-9</sup>m<sup>2</sup>wk<sup>3</sup>
8 A block body is an ideal: Absorber Radiator Both a &amp; b None of above
9 When platinum is heated is become dull red at: 900°C 500°C 800°C 1100°C
10 Which device is used as a rectifier? Capacitor Transistor Diode Transformer
11 A transistor has parts: 2 3 4 5
12 Conversion of A.C into D.C is called: Compton effect Rectification Amplification&nbsp; Pair production
13 OR gate is represented by: X = A+B X=A.B X=A+B X=A.B
14 NAND gate represented by: X = A. B X = A+B X= A.B X=|A+B|
15 For normal use: Emitter base function is reversed biased Collector base junction is reserved biased Emitter base junction is forward biased Both c and b
16 Which one has greater cone of impurity among all: Emitter Base Collector All are pure
17 Base of transistor is of order: 10<sup>-11</sup>m 10<sup>6</sup>m 10<sup>-8</sup>m 10<sup>-6</sup>m
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