Which of the following statements(s) is/are true? "Internal energy of an ideal gas.........

remains constant in an isothermal process.

decreases in an isothermal process.

increases in an isobaric process.

decreases in an isobaric expansion.

E M B I B E

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermodynamics>WBJEE 2018>Q 4

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One mole of a monoatomic ideal gas undergoes a quasistatic process, which is depicted by a straight line joining points $(V_{0}, T_{0})$ and $(2 V_{0}, 3 T_{0})$ in a $V - T$ diagram. What is the value of the heat capacity of the gas at the point $(V_{0}, T_{0}) ?$

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Important Questions on Thermodynamics

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WBJEE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermodynamics>WBJEE 2020>Q 5

An ideal gas undergoes the cyclic process

a b c a

as shown in the given

p - V

diagram.

It rejects

50 J

of heat during

a b

and absorbs

80 J

of heat during

c a

. During

b c

, there is no transfer of heat and

40 J

of work is done by the gas. What should be the area of the closed curve

a b c a ?

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermodynamics>WBJEE 2019>Q 6

The initial pressure and volume of a given mass of an ideal gas with $(\frac{C_{p}}{C_{V}} = γ)$ , taken in a cylinder fitted with a piston, are $p_{0}$ and $V_{0}$ respectively. At this stage the gas has the same temperature as that of the surrounding medium which is $T_{0} .$ It is adiabatically compressed to a volume equal to $\frac{V_{0}}{2} .$
Subsequently the gas is allowed to come to thermal equilibrium with the surroundings. What is the heat released to the surrounding?