# Physics MCQ (Multiple Choice Questions) - SchoolingAxis

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

a. Logic gates

b. Boolean algebra

c. Amplifier gain

d. Logic functions

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

Que- An OP-AMPs can amplify_______________?

a. D.C

b. A.C

c. Both A.C & D.C

d. None of the above

Que- The rectangular voltage is an example of____________________?

a. An analogue waveform

b. Continuous wave form

c. Electronic waveform

d. 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.

Que- Dimension of pressure is__________________?

a. MLT

b. ML-1T-1

c. ML-1T-2

d. ML-2T-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

Que- We can produce heat by________________?

a. Frictional process

b. Chemical processes

c. Electrical processes

d. 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

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

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

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

Que- Boyles law helds for ideal gases in________________?

a. isochoric processes

b. isobaric processes

c. 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

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

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

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

a. 37°C

b. 42°C

c. 55°C

d. 410°C

Que- The Fahrenheit and centigrade scales agree to________________?

a. 40

b. 15.5

c. 542

d. 273

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

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

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

a. 76cm 0°C

b. 760mm 273K

c. 1atm 273K

d. 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

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

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

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

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

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

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

Que- In which process entropy remains constant________________?

a. isobaric

b. isochoric

d. isothermal

Que- Adiabatic process is also called______________?

a. Heat exchange process

b. Heating process

c. Isentropic process

d. All of the above

Que- The work done in the isochoric process is________________?

a. constant

b. variable

c. zero

d. depends on situation

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

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

Que- Which quantity is a state function_______________?

a. internal energy

b. heat supply

c. pressure

d. volume

Que- The unit of entropy is________________?

a. J.K

b. J/K

c. N.m/sec

d. Kgm2/sec2.K

Que- The performance of a refrigerator is described by________________?

a. efficiency

b. coefficient of performance

c. both A and B

d. not described

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

a. isothermal

b. isochoric

c. isobaric

d. isentropic

Que- The value of Î³ for diatomic gas is_______________?

a. 1.67

b. 1.4

c. Î³ = 1.3

d. None

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

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

a. 22 feet

b. 32 feet

c. 52 feet

d. 42 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

Que- Name the SI unit having the symbol cd?

a. Candela

b. Cm

c. Ampere

d. Second

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

a. G

b. h

c. M

d. E

Que- Which of the following is not derived quantity________?

a. Time

b. Density

c. Volume

d. Area

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

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

a. Acceleration

b. Displacement

c. Speed

d. Force

Que- Who were the pioneers of Physics?

a. Egyptians

b. Greek

c. Latin

d. Persians

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

a. Ultraviolet

b. Sound

c. Infra-Red

d. Micro

Que- The turning effect of force is called_________?

a. Moment

b. Momentum

c. Torque

d. None of these

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

a. Angstrom

b. Micro

c. Nano meter

d. Fermi

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

b. Thorium

d. Uranium

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

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

d. Hardware

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

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

a. Electrons

b. Protons

c. Neutrons

d. Neutrino

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

a. Ship

b. Light

c. Sound

d. aircraft