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

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

Which quantity is a state function_______________?

A. internal energy
B. heat supply
C. pressure
D. volume

The unit of entropy is________________?

A. J.K
B. J/K
C. N.m/sec
D. Kgm2/sec2.K

The performance of a refrigerator is described by________________?

A. efficiency
B. coefficient of performance
C. both A and B
D. not described

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

A. isothermal
B. isochoric
C. isobaric
D. isentropic

The value of γ for diatomic gas is_______________?

A. 1.67
B. 1.4
C. γ = 1.3
D. None

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