Physics Mcqs with Answers - Mock MCQs Test

Q1 : The device or circuit used for conversion of A.C. into D.C. is called_______________?

A: An amplifier. B: A rectifier C: Filtering circuit D: Converter.

Q2 : The especially designed semiconductor diodes used as indicator lamps in electronic circuits are___________?

A: The switch B: The light emitting diode C: The photo diodes D: Solar cells.

Q3 : Semi-conductors with donor atoms and free electrons belong to the type________________?

A: n B: p C: mix D: any of above

Q4 : In p-n-p transistor the collector current is________________?

A: equal to emitter current B: slightly less than emitter current C: greater than emitter current D: any of above

Q5 : The simplest type of rectification known as half wave rectification is obtained by____________________?

A: using a transistor B: suppressing the harmonics in A.C voltage C: suppressing half wave of A.C supply by using diode D: using a Coolidge tube

Q6 : Depletion region of a junction is formed_____________?

A: during the manufacturing process B: under forward bias C: under reverse bias D: when temperature varies

Q7 : Which one of following band is completely filled in case of conductors ?

A: Conduction band B: Fermi band C: Valence band D: Forbidden band

Q8 : The value of resistivity for insulator is of the order of____________?

A: 105 ohm metre B: 106 ohm metre C: 107 ohm metre D: 108 ohm metre

Q9 : Forward current through a semi conductor diode circuit is due to____________?

A: minority carriers B: majority carriers C: holes D: electron

Q10 : Which one of the following is not a donor impurity ?

A: antimony B: phosphorus C: aluminium D: arsenic

Q11 : In the transistor schematic symbol, the arrow______________?

A: is located on the emitter B: is located on the base C: is locate on the collector D: points form north to south

Q12 : PAKMCQS.COM GK Mcqs Current Affairs Pak Study ISLAMIC STUDIES Everyday Science OTHER Quiz Mode (Sponsored by Sir Tauqeer) Join Sir Tauqeer Whatsaap group Physics Mcqs Physics Mcqs for Test Preparation Physics Mcqs for Test Preparation from Basic to Advance. Physics Mcqs are from the different sections of Physics. Here you will find Mcqs of Physics subject from Basic to Advance. Which will help you to get higher marks in Physics subject. These Mcqs are useful for students and job seekers i.e MCAT ECAT ETEA test preparation, PPSC Test, FPSC Test, SPSC Test, KPPSC Test,BPSC Test, PTS ,OTS,GTS,JTS,CTS. Download Medical Entry Test App: In half-wave rectification the output D.C. voltages is obtained across the load for_______________? 0 A. The negative half cycle of A.C. B. The positive half cycle of A.C. C. The positive and negative half cycles D. Either positive or negative half of A.C. Read More Details about this Mcq: In full wave rectification the output D.C. voltage across the load is obtained for_____________?

A: The positive half cycle of input A.C. B: The negative half cycle of input A.C. C: The complete cycle of input A.C. D: All of the above.

Q13 : In half-wave rectification the output D.C. voltages is obtained across the load for_______________?

A: The negative half cycle of A.C. B: The positive half cycle of A.C. C: The positive and negative half cycles D: Either positive or negative half of A.C.

Q14 : The device used for conversion of D.C. to A.C. is called______________?

A: Converter B: A rectifier C: Inverter D: Oscillator

Q15 : The specially designed semi-conductor diodes used as fast counters in electronic circuits are______________?

A: The light emitting diodes B: Photo diodes C: Photo voltaic cell D: Solar cells.

Q16 : The alternating voltage is an example of_______________?

A: A digital waveform B: An analogue waveform C: Discrete waveform D: None at all

Q17 : The operational amplifier is______________?

A: A high gain amplifier B: A high-power amplifier C: A high resistance amplifier D: A low resistance amplifier

Q18 : To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is_____________?

A: 2 B: 3 C: 4 D: 5

Q19 : The operation of a transistor requires______________?

A: That the emitter be heated B: That the base be heated C: That the collector be heated D: None of the above

Q20 : Non-inverting amplifier circuits have____________?

A: A very high input impedance B: A very low input impedance C: A low output impedance D: None of the above

Q21 : An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?

A: Non-inverting voltage at output B: Reference voltage on the other C: Virtual input D: Output

Q22 : The working of transistor as amplifier is similar to________________?

A: Step up transformer B: Step down transformer C: Three diodes in common D: Triode vacuum tube

Q23 : To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?

A: 2 B: 3 C: 4 D: 5

Q24 : In a half-wave rectifier the r.m.s. value of the A.C. component of the wave is________________?

A: Equal to D.C. value B: More than D.C. value C: Less than D.C. value D: Zero

Q25 : In forward bias the width of potential barrier_____________?

A: Increases B: Decreases C: Remains same D: No effect

Q26 : The electronic circuits which implement the various logic operations are called_____________?

A: Logic gates B: Boolean algebra C: Amplifier gain D: Logic functions

Q27 : Acceptor and donor impurities donate______________?

A: n-carriers only B: p-carriers only C: p-carriers and n-carriers respectively D: n-carriers and p-carriers respectively

Q28 : An OP-AMPs can amplify_______________?

A: D.C. B: A.C C: Both A.C. & D.C. D: None of the above

Q29 : The rectangular voltage is an example of____________________?

A: An analogue waveform B: Continuous wave form C: Electronic waveform D: A digital waveform

Q30 : Dimension of pressure is__________________?

A: MLT B: ML-1T-1 C: ML-1T-2 D: ML-2T-2

Q31 : The specially designed semi-conductor diodes used as fast counters in electronic circuits are_______________?

A: The light emitting diodes B: Photo diodes C: Photo voltaic cell D: Solar cells.

Q32 : Dimension of pressure is__________________?

A: MLT B: ML-1T-1 C: ML-1T-2 D: ML-2T-2

Q33 : Temperature is a property which determines_________________?

A: How much heat a body contains B: Whether a body will feel hot or cold to touch C: In which direction heat will flow between two systems D: How much total absolute energy a body has

Q34 : The scales of temperature are based on two fixed points which are_________________?

A: The temperatures of water at 0? 100?C B: The temperature of melting ice and boiling water at atmospheric pressure C: The temperatures of ice cold and boiling water D: The temperatures of frozen and boiling mercury

Q35 : At constant temperature the graph between V and 1/P is_____________?

A: Hyperbola B: Parabola C: A curve of any shape D: A straight lime

Q36 : We can produce heat by________________?

A: Frictional process B: Chemical processes C: Electrical processes D: All of the above

Q37 : Metabolism is the name of a process in which energy transformation takes place within______________?

A: Heat engine B: Human body C: Atmosphere D: Laboratory

Q38 : The pressure exerted by a column of mercury 76cm high and at 0°C is called_______________?

A: 1 atmosphere B: 1 Newton per square meter C: 1 Pascal D: data is insufficient

Q39 : If the pressure of a given gas is held constant its density is inversely proportional to its absolute temperature. We can refer it as another statement of______________?

A: Boyles law B: Charles law C: Ideal gas law D: Avagadros law

Q40 : Gas molecules of different masses in the same container have the same average transnational kinetic energy which is directly proportional to their_____________?

A: volume B: pressure C: absolute temperature D: time

Q41 : Boyles law helds for ideal gases in________________?

A: isochoric processes B: isobaric processes C: isothermal processes D: adiabatic processes

Q42 : If the volume of a gas is held constant and we increase its temperature then_______________?

A: its pressure is constant B: its pressure rises C: its pressure falls D: any of above

Q43 : Which one is not an example of adiabatic process ?

A: rapid escape of air from a burst tyre B: rapid expansion of air C: conversion of water into ice in refrigerator D: cloud formation in the atmosphere

Q44 : In a clinical thermometer the mercury in the capillary tube does not contract once removed from the patient because_______________?

A: Mercury takes a long time to contract B: The amount of mercury use is very small C: The capillary tube has a small constriction near the bulb D: The capillary tube is very narrow

Q45 : We prefer mercury as a thermometric substance because______________?

A: Over a wide range of temperature its expansion is uniform B: It does not stick to thermometer glass C: It opaque to light D: All of above

Q46 : Numerical value of Boltzmanns constant is______________?

A: 1.38×10-31JK-1 B: 3.18×10-31JK-1 C: 3.18×10-23JK-1 D: 1.38×10-23JK-1

Q47 : Normal human body temperature 98.6°F corresponds to______________?

A: 37°C B: 42°C C: 55°C D: 410°C

Q48 : The Fahrenheit and centigrade scales agree to________________?

A: 40 B: 15.5 C: 542 D: 273

Q49 : The size of one degree of Celsius is equal to_________________?

A: One degree of Fahrenheit scale B: 1.8 degrees of Fahrenheit scale C: 3.2 degrees of Fahrenheit scale D: 2.12 degrees of Fahrenheit scale

Q50 : According to Pascals law the pressure of gas in a vessel is_____________?

A: Different in different direction B: Same in all direction C: Same only along opposite directions D: Same only along normal directions

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Physics MCQs with Answers – Free Bio MCQs Test for All Topics

Looking for Physics MCQs with answers? Get topic-wise Bio MCQs tests for NEET, MDCAT, and competitive exams. Practice now and test your knowledge with educatehow.com

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