jee_main_2026_23_january_evening - Thermodynamics Topics

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QUESTION #26 First Law of Thermodynamics
The internal energy of a monoatomic gas is 3nRT. One mole of helium is kept in a cylinder having internal cross section area of 17 \, mathrmcm^2 and fitted with a light movable frictionless piston. The gas is heated slowly by suppling 126 \, mathrmJ heat. If the temperature rises by 4^circmathrmC , then the piston will move ____ cm. (atmospheric pressure = 10^5 \, mathrmPa)
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QUESTION #39 Isothermal and Adiabatic Processes
One mole of an ideal diatomic gas expands from volume V to 2V isothermally at a temperature 27^circ C and does W joule of work. If the gas undergoes same magnitude of expansion adiabatically from 27^circ C doing the same amount of work W, then its final temperature will be (close to) ____ ^circ C.
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)
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