Thermodynamics ...

The efficiency of carnot's engine operating between reservoirs, maintained at temperature 27^o C and ‒123^o C is ............

If a heat engine absorbs 50 KJ heat from a heat source and has efficiency of 40%, then the heat released by it in heat sink is ...........

The efficiency of heat engine is 30% If it gives 30 KJ heat to the heat sink, than it should have absorbed ........... KJ heat from heat source.

If a heat engine absorbs 2 KJ heat from a heat source and release 1.5 KJ heat into cold reservoir, then its efficiency is ...........

PV diagram of a diatomic gas is a straight line passing through origin. The molar heat capacity of the gas in the process will be

Heat is supplied to a diatomic gas at constant pressure. The ratio of ∆Q : ∆U : ∆W is

Four spheres A, B, C, and D of different metals but of same radius are kept at same temperature. The ratio of their densities is 2: 3: 5: 1. If specific heats of their materials are in the ratio 3: 6: 2: 4, which sphere will show initially the fastest rate of cooling ?

Volume versus temperature graph of two moles of helium gas is as shown in Fig. The ratio of heat absorbed and work done by the gas in the process 1 – 2 is

Fig. shows two paths for the change of state of a gas from A to B. The ratio of molar heat capacities in paths 1 and 2 is

From the following V —T diagram, Fig. What is true about pressure ?