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JEE 2020 Revision :Thermodynamics
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Question 1
Which is not true for irreversible isothermal expansion?
Question 2
Which of the following relationship is incorrect for isothermal and adiabatic expansion?
Question 3
An ideal monoatomic gas is taken across the given cyclic path. What is the work done during the given cycle?
Question 4
The temperature at the bottom of a high waterfall is higher than that at the top because
Question 5
A gas expands in a piston-cylinder device from V1 to V2, the process being described by P = 
+ b. Where P : Pressure and V: Volume The work done in process is –
+ b. Where P : Pressure and V: Volume The work done in process is – Question 6
An ideal gas having initial pressure P, volume V and temperature T is allowed to expand adiabatically until its volume becomes 5.66V while its temperature fall to T/2. Obtain the work done by the gas during the expansion as a function of the initial pressure P and volume V.
(ln 5.66 = 1.733) –
(ln 5.66 = 1.733) –
Question 7
When unit mass of water boils to become steam at 100°C, it absorbs Q amount of heat. The densities of water and steam at 100°C are ρ1 and ρ2 respectively and the atmospheric pressure is p0. The increase in internal energy of the water is
Question 8
Three processes from a thermodynamic cycle as shown on P-V diagram for an ideal gas. Process 1 → 2 takes place at constant temperature (300 K). Process 2 → 3 takes place at constant volume. During this process 40J of heat leaves the system. Process 3 → 1 is adiabatic and temperature T3 is 275K. Work done by the gas during the process 3 → 1 is
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Mar 30JEE & BITSAT
