Physics MCQ (Multiple Choice Questions) - SchoolingAxis

Physics MCQ (Multiple Choice Questions)

 Que- The electronic circuits which implement the various logic operations are called_____________?  

a. Logic gates  

b. Boolean algebra  

c. Amplifier gain  

d. Logic functions 

Answer- Logic gates

Que- 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 

Answer- p-carriers and n-carriers respectively

Que- An OP-AMPs can amplify_______________?  

a. D.C  

b. A.C  

c. Both A.C & D.C  

d. None of the above 

Answer- A.C.

Que- The rectangular voltage is an example of____________________?  

a. An analogue waveform  

b. Continuous wave form  

c. Electronic waveform  

d. A digital waveform 

Answer- A digital waveform

Que- 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. 

Answer- Photo diodes

Que- Dimension of pressure is__________________?  

a. MLT  

b. ML-1T-1  

c. ML-1T-2  

d. ML-2T-2 

Answer- ML-1T-2

Que- 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 

Answer- In which direction heat will flow between two systems

Que- 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 

Answer- The temperature of melting ice and boiling water at atmospheric pressure

Que- 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 

Answer- A straight lime

Que- We can produce heat by________________?  

a. Frictional process  

b. Chemical processes  

c. Electrical processes  

d. All of the above 

Answer- All of the above

Que- Metabolism is the name of a process in which energy transformation takes place within______________?  

a. Heat engine  

b. Human body  

c. Atmosphere  

d. Laboratory 

Answer- Human body

Que- 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 

Answer- 1 atmosphere

Que- 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 

Answer- Charles law

Que- 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 

Answer- absolute temperature

Que- Boyles law helds for ideal gases in________________?  

a. isochoric processes  

b. isobaric processes  

c. isothermal processes  

d. adiabatic processes 

Answer- isothermal processes

Que- 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 

Answer- its pressure rises

Que- 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 

Answer- conversion of water into ice in refrigerator

Que- 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 

Answer- The capillary tube has a small constriction near the bulb

Que- 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 

Answer- All of above

Que- 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 

Answer- 1.38×10-23JK-1

Que- Normal human body temperature 98.6°F corresponds to______________?  

a. 37°C  

b. 42°C  

c. 55°C  

d. 410°C 

Answer- 37°C

Que- The Fahrenheit and centigrade scales agree to________________?  

a. 40  

b. 15.5  

c. 542  

d. 273 

Answer- 40

Que- 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 

Answer- 1.8 degrees of Fahrenheit scale

Que- 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 

Answer- Same in all direction

Que- Which one is true for internal energy ?  

a. It is sum of all forms of energies associated with molecules of a system  

b. It is a state function of a system  

c. It is proportional to transnational K.E of the molecules  

d. All are correct 

Answer- All are correct

Que- Standard condition STP refer to a gas at ___________________?  

a. 76cm 0°C  

b. 760mm 273K  

c. 1atm 273K  

d. all of the above 

Answer- all of the above

Que- At what temperature is the Fahrenheit scale reading equal to twice that of the Celsius scale?  

a. 460°C  

b. 280°C  

c. 360°C  

d. 160°C 

Answer- 160°C

Que- The area enclosed by the curve ABCDA for a Carnot heat engine represents the work done by Carnot engine_______________?  

a. at any instant  

b. averagely  

c. during its operation  

d. during one cycle 

Answer- during one cycle

Que- For a gas obeying Boyles law if the pressure is doubled the volume becomes________________?  

a. double  

b. one half  

c. four times  

d. one fourth 

Answer- one half

Que- Triple point of water is_____________________?  

a. 273°C at 6.11 Kpa  

b. 273K at 61.6 Kpa  

c. 273.16°C at 0.611 Kpa  

d. 273.16K at 750 Kpa 

Answer- 273.16°C at 0.611 Kpa

Que- Which of the following properties of molecules of a gas is same for all gases at particular temperature ?  

a. momentum  

b. mass  

c. velocity  

d. kinetic energy 

Answer- kinetic energy

Que- Boltzman constant K in terms of universal gas constant R and Avagadros number Na is give as_______________?  

a. K = RNa  

b. K = R/Na  

c. K = Na/Ra  

d. K = nRNa 

Answer- K = R/Na

Que- Average translational kinetic energy per molecule of an ideal gas is given by_____________?  

a. 3NaT/2R  

b. 2NaT/3  

c. 3RT/2Na  

d. 3Na/2RT 

Answer- 3RT/2Na

Que- In which process entropy remains constant________________?  

a. isobaric  

b. isochoric  

c. adiabatic  

d. isothermal 

Answer- adiabatic

Que- Adiabatic process is also called______________?  

a. Heat exchange process  

b. Heating process  

c. Isentropic process  

d. All of the above 

Answer- Isentropic process

Que- The work done in the isochoric process is________________?  

a. constant  

b. variable  

c. zero  

d. depends on situation 

Answer- zero

Que- For the successful operation of Heat engine which condition should be met ?  

a. cyclic process  

b. operated at certain temperature difference  

c. both A and B   

d. none of these 

Answer- both A and B 

Que- The purpose of flywheel in the engines is________________?  

a. to smooth out the energy variation  

b. to add more weight to engine to work it stable  

c. to start engine  

d. both A and B 

Answer- to smooth out the energy variation

Que- Petrol engine is a________________?  

a. C.I engine  

b. SI engine  

c. IC engine  

d. all the above 

Answer- all the above

Que- Which quantity is a state function_______________?  

a. internal energy  

b. heat supply  

c. pressure  

d. volume 

Answer- internal energy

Que- The unit of entropy is________________?  

a. J.K  

b. J/K  

c. N.m/sec  

d. Kgm2/sec2.K 

Answer- J.K

Que- The performance of a refrigerator is described by________________?  

a. efficiency  

b. coefficient of performance  

c. both A and B  

d. not described 

Answer- coefficient of performance

Que- In which process all the heat supplied is converted into work done ?  

a. isothermal  

b. isochoric  

c. isobaric  

d. isentropic 

Answer- isothermal

Que- The value of γ for diatomic gas is_______________?  

a. 1.67  

b. 1.4  

c. γ = 1.3  

d. None 

Answer- 1.4

Que- A stone is thrown upward from the top of a 59.4m high cliff with an upward velocity component of 19.6m/s how long is the stone in the air?  

a. 4.00 s  

b. 5.00 s  

c. 6.00 s  

d. 7.00 s 

Answer- 6.00 s

Que- The average acceleration caused by gravity per second is____________?  

a. 22 feet  

b. 32 feet  

c. 52 feet  

d. 42 feet 

Answer- 32 feet

Que- Which of the following branch of Physics deals with the internal structure of earth?  

a. Biophysics  

b. Geophysics  

c. Plasma physics  

d. Atomic physics 

Answer- Geophysics

Que- Name the SI unit having the symbol cd?  

a. Candela  

b. Cm  

c. Ampere  

d. Second 

Answer- Candela

Que- The symbol of the prefix used for Mega is_______?  

a. G  

b. h  

c. M  

d. E 

Answer- M

Que- Which of the following is not derived quantity________?  

a. Time  

b. Density  

c. Volume  

d. Area 

Answer- Time

Que- The least count of Vernier caliper is ________ containing 10 Vernier scale divisions?  

a. 0.001mm  

b. 0.01mm  

c. 0.1mm  

d. 0.0001mm 

Answer- 0.1mm

Que- Which one of the following is not vector quantity _______?  

a. Acceleration  

b. Displacement  

c. Speed  

d. Force 

Answer- Speed

Que- Who were the pioneers of Physics?  

a. Egyptians  

b. Greek  

c. Latin  

d. Persians 

Answer- Greek

Que- Which of the following waves have smallest velocity in vacuum?  

a. Ultraviolet  

b. Sound  

c. Infra-Red  

d. Micro 

Answer- Sound

Que- The turning effect of force is called_________?  

a. Moment  

b. Momentum  

c. Torque  

d. None of these 

Answer- Torque

Que- The most suitable unit for expressing nuclear radius is_______?  

a. Angstrom  

b. Micro  

c. Nano meter  

d. Fermi 

Answer- Fermi

Que- Which one of the following is not a radioactive element ?  

a. Cadmium  

b. Thorium  

c. Radium  

d. Uranium 

Answer- Cadmium

Que- Oil rises up to wick in a lamp because_____________?  

a. Oil is very light  

b. Oil is volatile  

c. Diffusion of oil through the wick  

d. Capillary action phenomenon 

Answer- Capillary action phenomenon

Que- Newton's Third Law of Motion?  

a. every action there is an equal and opposite reaction.  

b. attraction or repulsion between two charges  

c. volume of a given mass of gas increases or decreases  

d. temperature remaining constant, volume of a given mass of a gas varies inversely 

Answer- every action there is an equal and opposite reaction

Que- Medium which sends signal from source to destination is known as ________ ?  

a. Transmitter  

b. Transmission channel  

c. Receiver  

d. Hardware 

Answer- Transmission channel

Que- Joule Thomson effect is based upon __________ ?  

a. Sudden compression of gases  

b. Sudden expansion of gases  

c. Cooling of gases  

d. Heating of gases 

Answer- Sudden expansion of gases

Que- Rutherford in his atomic model could not explain behavior of ___________ ?  

a. Electrons  

b. Protons  

c. Neutrons  

d. Neutrino 

Answer- Electrons

Que- Mach number is used in connection with the speed of___________?  

a. Ship  

b. Light  

c. Sound  

d. aircraft 

Answer- aircraf

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