Physics MCQs here cover topics like Definition of Physics, Branches of Physics, Class 9, Class 10, Class 11, Class 12, SST test, and Everyday General Science MCQs. Physics MCQs for entry tests. Chemistry MCQS , Biology Mcqs
The value of γ for diatomic gas is _______ ?
A. 1.4
B. 1.87
C. 1.67
D. γ = 1.3In which process all the heat supplied is converted into work done?
A. isobaric
B. isentropic
C. isothermal
D. isochoricPerformance of a refrigerator is described by _____ ?
A. coefficient of performance
B. efficiency
C. both A and B
D. not describedWhich quantity is a state function ______ ?
A. volume
B. internal energy
C. heat supply
D. pressurePetrol engine is a ______ ?
A. IC engine
B. C.I engine
C. SI engine
D. all the abovePurpose of flywheel in the engines is ______ ?
A. to add more weight to engine to work it stable
B. to start engine
C. to smooth out the energy variation
D. both A and BFor the successful operation of Heat engine which condition should be met?
A. operated at certain temperature difference
B. cyclic process
C. both A and B
D. None of themWork done in the isochoric process is ______ ?
A. depends on situation
B. zero
C. constant
D. variableAdiabatic process is also called ______ ?
A. Isentropic process
B. Heating process
C. Heat exchange process
D. None of themWhich of the following waves have smallest velocity in vacuum ?
A. Infra-Red
B. Micro
C. Sound
D. Ultraviolet