Thermodynamics ...

An ideal gas heat engine operates in Carnot cycle between 227^oC and 127^oC. It absorbs 6 × 10⁴ cals of heat at higher temperature. Amount of heat converted to work is:

Which of the following circular rods, (given radius r and length l) each made of the same material and whose ends are maintained at the same temperature difference will conduct most heat?

A system goes from A to B via two processes I and II as shown in Fig. If ∆U₁ and ∆U₂ are the changes in internal energies in the processes I and II respectively, then

Water of volume 2 litre in a container is heated with a coil of 1 kW at 27^oC. The lid of the container is open and energy dissipates at the rate of 160 J/s. In how much time, temperature will rise from 27^oC to 77^oC? [Given specific heat of water is 4.2 kJ/kg]

Calorie is defined as the amount of heat required to raise temperature of 1 g of water by 1^oC and it is defined under which of the following conditions?

A rigid container with thermally insulated walls contains a coil of resistance 100Ω, carrying current 1 A. Change in internal energy after 5 minute will be

A difference of temperature of 25^o C is equivalent to a difference of

What is the value of absolute temperature on the Celsius Scale ?

At Which temperature the density of water is maximum ?

The temperature of a body on Kelvin Scale is found to be x.K.when it is measured by Fahrenhit thesmometes. it is found to be x^oF, then the value of x is .