Physics 914 MCQs [All-Courses]

Physics is a core science subject that deals with the study of matter, energy, motion, force, heat, light, electricity, magnetism, and modern physics concepts. It plays a vital role in competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS, where questions test conceptual understanding, numerical problem-solving, and application of laws and formulas.

Petrol engine is a________________?

A C.I engine

B SI engine

C IC engine

D all the above

Review Detailed Answer

Correct Answer: all the above

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

Review Detailed Answer

Correct Answer: to smooth out the energy variation

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

Review Detailed Answer

Correct Answer: both A and B

The work done in the isochoric process is________________?

A constant

B variable

C zero

D depends on situation

Review Detailed Answer

Correct Answer: zero

Adiabatic process is also called______________?

A Heat exchange process

B Heating process

C Isentropic process

D All of the above

Review Detailed Answer

Correct Answer: Isentropic process

In which process entropy remains constant________________?

A isobaric

B isochoric

C adiabatic

D isothermal

Review Detailed Answer

Correct Answer: adiabatic

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

Review Detailed Answer

Correct Answer: 3RT/2Na

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

Review Detailed Answer

Correct Answer: K = R/Na

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

Review Detailed Answer

Correct Answer: kinetic energy

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

Review Detailed Answer

Correct Answer: 273.16°C at 0.611 Kpa

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Physics 914 MCQs [All-Courses]

All Topics 914

All Topics 914

Petrol engine is a________________?

The purpose of flywheel in the engines is________________?

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

The work done in the isochoric process is________________?

Adiabatic process is also called______________?

In which process entropy remains constant________________?

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

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

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

Triple point of water is_____________________?