19 JEE Main 2020 Thermodynamics previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2020 previous-year questions from the Thermodynamics chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Thermodynamics chapter hub.
A Carnot engine having an efficiency of 1 10 is being used as a refrigerator. If the work done on the refrigerator is 1…
A balloon filled with helium 32 ° C   and   1 .7 atm bursts. Immediately after wards the expansion of…
Match the C p C v ratio for ideal gases with different type of molecules: Molecule Type C p / C v (A) Monoatomic (I) 7…
The change in the magnitude of the volume of an ideal gas when a small additional pressure ∆ P is applied at a co…
Two ideal Carnot engines operate in cascade (all heat given up by one engine is used by the other engine to produce wor…
Starting at temperature 300 K , one mole of an ideal diatomic gas γ = 1.4 is first compressed adiabatically from v…
Three different processes that can occur in an ideal monoatomic gas are shown in the P vs V diagram. The paths are labe…
An engine operates by taking a monatomic ideal gas through the cycle shown in the figure. The percentage efficiency of…
Under an adiabatic process, the volume of an ideal gas gets doubled. Consequently, the mean collision time between the…
An engine takes in 5 moles of air at 20   ° C and 1   atm , and compresses it adiabatically to 1 / 10 th…
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