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600 J of heat is added to a monoatomic gas in a process in which the gas performs a work of 150 J. The molar heat capacity for the process is

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Important Questions on Laws of Thermodynamics

EASY
JEE Advanced
IMPORTANT
The internal energy of a gas is given by U=2pV. It expands from V0 to 2V0 against a constant pressure p0. The heat absorbed by the gas in the process is
MEDIUM
JEE Advanced
IMPORTANT

pT diagram of one mole of an ideal monoatomic gas is shown. Processes AB and CD are adiabatic. Work done in the complete cycle is

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MEDIUM
JEE Advanced
IMPORTANT
An ideal monoatomic gas undergoes a process in which its internal energy U and density ρ vary as Uρ=constant. The ratio of change in internal energy and the work done by the gas is
MEDIUM
JEE Advanced
IMPORTANT

The given figure shows the variation of force applied by ideal gas on a piston which undergoes a process during which piston position changes from 0.1 to 0.4 m. If the internal energy of the system at the end of the process is 2.5 J higher, then the heat absorbed during the process is

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EASY
JEE Advanced
IMPORTANT
A gas can expand through two processes, (i) isobaric, (ii) pV=constant. Assuming that the initial pressure and volume are the same in both processes and the final volume which is two times the initial volume is also the same in both processes, which of the following is true?
MEDIUM
JEE Advanced
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An ideal gas of an adiabatic exponent γ is expanded so that the amount of heat transferred to the gas is equal to the decrease of its internal energy. Then, the equation of the process in terms of the variables T and V is
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JEE Advanced
IMPORTANT

A thermodynamical process is shown in the figure with pA=3×patmVA=2×10-4 m3pB=8×patmVC=5×10-4 m3
In the process AB and BC600 J and 200 J heat are added to the system. Find the change in internal energy of the system in the process CA1patm=105 N m-2

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MEDIUM
JEE Advanced
IMPORTANT

A gas takes part in two processes, in which it is heated from the same initial state 1 to the same final temperature. The processes are shown on the pV diagram by the straight lines 13, 12 and 23 are the points on the same isothermal curve. Q1 and Q2 are the heat transfer along with the two processes. Then,

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