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 reverse saturation current in a PN junction diode is only due to:	Majority carriers Minoritycarriers Acceptor ions Donor ions
2	In an N-type silicon, which of the following statement is true?	Electrons are majority carriers & trivalent atoms are the dopants Electrons are majority carriers & pentavalent atoms are the dopants Holes are minority carriers & pentavalent atoms are the dopants. Holes are minority carriers & trivavalent atoms are the dopants.
3	A cable breaks if stretched by more than 2mm. It is cut into two equal parts. How much either part can be stretched without breaking?	25 m 1mm 2mm 0.5 m
4	Curie temperature is a point where :	Diamagnetism changes to paramagnetism Paramagnetism changes to Diamagnetism Ferromagnetism changes to paramagnetism Paramagnetism changes to Ferromagnetism
5	If both the length and radius of the rod are doubled, then the modulus of elasticity will:	Increase Decrease Remains the same Doubled
6	Which of the modulus of elasticity is involved in compressing a rod to decrease its length ?	Young's modulus Bulk modulus Modulus of elasticity None of these
7	Which of the modulus of elasticity is involved in compressing a rod to decrease its length ?	Young's modulus Bulk modulus Modulus of elasticity None of these
8	A wire stretched to double of its length, its strain is:	2 1 0 0.5
9	The circuit in which current and voltage are in phase, the power factor is:	Zero 1 -1 2
10	An electromagnetic wave goes from air to glass which of the following does not change?	Radio waves X-rays Ultra violet radiation Ultra sond waves
11	For electromagnetic waves, Maxwell generalized	Gauses law for magnetism Gauses law for eletricity Fradays law Amperes law
12	An alternating quantity (voltage or current) is completely known if we know its:	Maximum Frequency and phase Effective value Both (a) & (b)
13	In LR circiut which one of the following statements is correct?	L and R opposes each other R value increases with frequency The inductive reactance increases with frequency The inductive reactance decreases with frequency
14	An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:	50 Hz 25Hz 100 Hz 75 Hz
15	The phase difference between the current and voltage at resonce is:	0 <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">π</span> -<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">π</span> <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">π/2</span>
16	In AC system we generate sine wave form because:	It san be easily draw It produces least disturbance in electrical circuits It is nature standard Other waves cannot be produced easily
17	In an LRC circiut, the capacitance is made one-fourth, when an resonance . Then what should be change in inductance, so that the circuit remain in resonance?	4 times 1/4 times 8 times 2 times

Download This Set