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 A perfect absorber must also be perfect Cavity Sources of radiation Radiator None of these
2 De-Broglie waves are associated with Moving charged particles only Moving neutral particles only All moving particles All parties whether in motion or at rest
3 Eintein's Photoelectric equation is Ek= hf -∅ in this equation E1, refers to: K.E of al the emited electrons Mean K.E of emited electrons Maximum K.E of emited electrons Minimum K.E of emited electrons
4 If the kinetic energy of a free electron doubles, its de Broglie wavelength changes by the factor. <b style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">√</b><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">2</span> 1/<b style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">√</b><span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">2</span> 2 1/2
5 In a transistor, collector current is controlled by: Collector voltage Base current Collector resistance All of the above
6 In a transistor, collector current is controlled by: Collector voltage Base current Collector resistance All of the above
7 Most of the electrons in the base of an NPN transistor flow: Out of the base lead Into the collector Into the emit Into the base supply
8 When transistor are used in digital circuits they usually operate in the : Active region Break down region Saturation &amp; cutoff regions Linear region
9 Improper bisting of a transistor circiut produces: Heavy loading of emitter current Distortion in the output output signal Excessive heat at collector terminal Faculty location of load line
10 The reverse saturation current in a PN junction diode is only due to: Majority carriers Minoritycarriers Acceptor ions Donor ions
11 In an N-type silicon, which of the following statement is true? Electrons are majority carriers &amp; trivalent atoms are the dopants Electrons are majority carriers &amp; pentavalent atoms are the dopants Holes are minority carriers &amp; pentavalent atoms are the dopants. Holes are minority carriers &amp; trivavalent atoms are the dopants.
12 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
13 Curie temperature is a point where : Diamagnetism changes to paramagnetism Paramagnetism changes to Diamagnetism Ferromagnetism changes to paramagnetism Paramagnetism changes to Ferromagnetism
14 If both the length and radius of the rod are doubled, then the modulus of elasticity will: Increase Decrease Remains the same Doubled
15 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
16 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
17 A wire stretched to double of its length, its strain is: 2 1 0 0.5
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