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