Physics MCQs: Most Important Questions for Exams

McqsTestz.com has uploaded a comprehensive collection of Physics MCQs covering a wide range of topics including mechanics, thermodynamics, electromagnetism, optics, modern physics, waves, fluids, and more. Perfect for students preparing for exams such as matriculation, intermediate, competitive tests, Lecturer and university-level assessments.

Physics MCQs

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

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

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

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

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

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

Standard condition STP refer to a gas at ___________________?

A. 76cm 0°C

B. 760mm 273K

C. 1atm 273K

D. all of the above

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

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

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

MCQs (Category wise)

Departmental Solved Past Papers

National Highway & Motorway
Intelligence Bureau
Airport Security Force
Anti-Narcotics Force
Federal Board of Revenue FBR
Pakistan Academy of Letters
Ministry of National Food Security & Research
Ministry of Information & Broadcasting
Survey of Pakistan
National Heritage & Culture Division
Ministry of Planning Development & Special Initiative
Election Commission of Pakistan
Pakistan Meteorological Department
Ministry of Interior
Ministry of Foreign Affairs
Ministry of Religious Affairs
Department of Passport & Immigration
Pakistan Post Office
Audit General of Pakistan
Pakistan Bureau of Statistics
Poverty Alleviation & Social Safety Division
Ministry of Defence
Ministry of Law & Justcie