A gas is filled in a box, which is moving with velocity v → . The internal energy of the gas will not include kinetic energy:

of box due to its translational motion.

of molecules due to translational motion.

of molecules due to rotational motion.

of molecules due to vibrational motion.

One calorie is defined as the amount of heat energy needed to raise the temperature of one gram of water by one degree Celsius at a pressure of one atmosphere. A calorie is a unit of measure of energy.

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The variables like pressure, volume, temperature of a thermodynamic system are microscopic.

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Important Questions on Thermodynamics

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

A balloon is filled at

27 ° C

and

1 atm

pressure by

500 m^{3}

He

. At

- 3 ° C

and

0.5 atm

pressure, the volume of

He

will be

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Consider the given diagram. An ideal gas is contained in a chamber (left) of volume $V$ and is at an absolute temperature $T .$ It is allowed to rush freely into the right chamber of volume $V$ which is initially vacuum. The whole system is thermally isolated. What will be the final temperature, if the equilibrium has been attained?

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HARD

Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

A one mole of ideal gas goes through a process in which pressure

P

varies with volume

V

P = 3 - g {(\frac{V}{V_{0}})}^{2}

, where

V_{0}

is a constant. The maximum attainable temperature by the ideal gas during this process is (All quantities are in

SI

units and

R

is gas constant)

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

The pressure versus temperature graph of an ideal gas is shown in the figure below. If the density of gas at point $A$ is $ρ_{0}$ , then the density of the gas at point $B$ will be

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MEDIUM

Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

A system goes from $A$ to $B$ via two processes $I$ and $II$ shown in the figure. If $Δ U_{1}$ and $Δ U_{2}$ are the changes in internal energies in the processes I and Il respectively

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

A gas is filled in a box, which is moving with velocity

\vec{v}

. The internal energy of the gas will not include kinetic energy:

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Distinguish between heat and temperature?

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

A system is in a state of thermodynamical equilibrium, if:

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Define one calorie.

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Which of the following parameters does not characterize the thermodynamic state of matter?

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

The human body is an example of

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Which one of the following is not true in a thermodynamic process?

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Which one of the following is not a macroscopic variable of the gas (system) filled in a container?

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Some of the thermodynamic parameters are state variables while some are process variables. Some grouping of the parameters are given. Choose the correct one

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

If two systems are separated by a diathermic wall, the macroscopic quantity which is equal for two systems is:

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

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 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]

MEDIUM

Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

If an average person jogs, he produces