List of top Physics Questions on Laws of thermodynamics asked in JEE Main

A certain amount of gas of volume $V$ at $27^{\circ} C$ temperature and pressure $2 \times 10^7 Nm ^{-2}$ expands isothermally until its volume gets doubled Later it expands adiabatically until its volume gets redoubled The final pressure of the gas will be (Use $\gamma=15$ )

For a system undergoing isothermal process, heat energy is supplied to the system. Choose the option showing correct statements
(a) Internal energy will increase
(b) Internal energy will decrease
(c) Work done by system is positive
(d) Work done by system is negative
(e) Internal energy remains constant

A unit scale is to be prepared whose length does not change with temperature and remains $20\, cm$, using a bimetallic strip made of brass and iron each of different length The length of both components would change in such a way that difference between their lengths remains constant If length of brass is $40 \,cm$ and length of iron will be ________$cm$$(\alpha_{iron}=1.2\times10^{-5}K^{-1} \,\,\,and \,\,\,\alpha_{brass}=1.8\times10^{-5}K^{-1}).$

A thermodynamic system is taken from an original state D to an intermediate state E by the linear process shown in the figure. Its volume is then reduced to the original volume from E to F by an isobaric process. The total work done by the gas from D to E to F will be

A thermodynamic system is taken from an original state D to an intermediate state

$2$ moles of an ideal monatomic gas is carried from a state $(P_0, V_0)$ to a state $(2P_0, 2V_0)$ along a straight line path in a P-V diagram. The amount of heat absorbed by the gas in the process is given by

List of top Physics Questions on Laws of thermodynamics asked in JEE Main

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