12th Class FSc Part 2 Physics Chapter Wise Online MCQ Test With Answer PDF

Physics FSC Part 2 Online MCQ's Test

Sr. #	Questions	Answers Choice
1	The output from a full wave rectifier is	An ac voltage A dc voltage Zero A pulsating unidirectional voltage
2	One use of a single p-n junction semiconductor in an electrical circuit is a	Rectifier Transistor Battery Diode
3	The gate, which changes the logic level to its opposite level is called	NOR gate AND gate OR gate NOT gate
4	The mathematical symbol for NOR operation is	X = A . B X = A + D
5	An expression for gain of an inverting amplifier is	(R<sub>1</sub>R<sub>2</sub>) None of these
6	In case of op-amp as an inverting amplifier, V₊ - V_- = 0, this is because	Open gain loop is very low Closed loop gain is very high Open loop gain is very high Both (a) and (a)
7	For normal transistor the emitter current can be given by	I<sub>E</sub> = I<sub>C</sub> I<sub>E</sub> = I<sub>C</sub> + I<sub>B</sub> I<sub>E</sub> = I<sub>B</sub> None of these
8	The symbol of p-n-p transistor is
9	In a certain circuit, I_{B = 40 µA,}I_C= 20 mA	450 amp 0.45 amp 5 m amp 500 amp
10	The circuit of full wave rectification consist of	Three diodes Four diodes Two diodes One diode
11	The potential difference across depletion region in case of Si is	0.6 volt 0.9 volt 0.7 volt 0.2 volt
12	The semi conductor diode has the property of	Two way conduction Zero conduction One way conduction Amplification
13	The impurity in the germinium is usually in the ratio of	1:10<sup>6</sup> 1:10<sup>4</sup> 1:10<sup>8</sup> 1:10<sup>10</sup>
14	The average gap for Germanium at 0K is	1.12 ev 0.02 ev 6.72 ev 7.2 ev
15	Which of the following has bulk modulus?	Water Gas Honey All
16	Coercive force is used to	Demagnetize the material Magnetize the material Extend it None of these
17	At 0 K a piece of silicon is a	Conductor Semi-conductor Insulator All

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