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
Physics MCQs with Answers
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
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
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
In which process entropy remains constant________________?
A. isobaric B. isochoric C. adiabatic D. isothermal
Adiabatic process is also called______________?
A. Heat exchange process B. Heating process C. Isentropic process D. All of the above
The work done in the isochoric process is________________?
A. constant B. variable C. zero D. depends on situation
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
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
Petrol engine is a________________?
A. C.I engine B. SI engine C. IC engine D. all the above