Chapter 15 – Thermodynamics

Internal energy of n1 ​moles of hydrogen at temperature T is equal to the internal energy of n2 ​moles of helium at temperature 2T. Then the ratio n1 /n2 ​ is: Internal energy of n1 ​moles of hydrogen at temperature T is equal to the internal energy of n2 ​moles of helium at temperature 2T. [...]

If pressure and temperature of an ideal gas is doubled and volume is halved, the number of molecules of the gas If pressure and temperature of an ideal gas is doubled and volume is halved the number of molecules of the gas September 5, 2021 Category: Arihant Physics by D.C Pandey , Chapter 15 - [...]

In a certain region of space, there are n number molecules per unit volume. The temperature of the gas is T. The pressure of the gas will be: In a certain region of space there are n number molecules per unit volume. The temperature of the gas is T. The pressure of the gas will [...]

In a cyclic process shown in the figure, an ideal gas is adiabatically taken from B and A, the work done on the gas during the process B−A is 30 J, when the gas is taken from A−B the heat absorbed by the gas is 20 J. The change in internal energy of the gas [...]

Sixty per cent of given sample of oxygen gas when raised to a high temperature dissociates into atoms. Ration of its initial heat capacity (at constant volume) to the final heat capacity (at constant volume) will be : Two monoatomic ideal gas at temperature T1 and T2 are mixed. There is no loss of energy. [...]

If two rods of length L and 2L having coefficients of linear expansion α and 2α respectively are connected so that total length becomes 3L, the average coefficient of liner expansion of the composition rod equals: If two rods of length L and 2L having coefficients of linear expansion α and 2α respectively are connected [...]

The freezing point on a thermometer is marked as 20^o and the boiling point as 130^o. A temperature of human body (34 degree C) on this thermometer will be read as The freezing point on a thermometer is marked as 20^o and the boiling point as 130^o. A temperature of human body (34 degree C) [...]

The quantity PV/KT (k = Boltzmann’s constant) represents The quantity PV/KT (k = Boltzmann's constant) represents September 5, 2021 Category: Arihant Physics by D.C Pandey , Chapter 15 - Thermodynamics , Volume 1 ,

In the process PV = constant, pressure (P) versus density (o) graph of an ideal gas is In the process PV = constant pressure (P) versus density (o) graph of an ideal gas is September 5, 2021 Category: Arihant Physics by D.C Pandey , Chapter 15 - Thermodynamics , Volume 1 ,

A gas is expanded to double its volume by two different processes. One is isobaric and the Other is isothermal. Let W1 ​and W2 ​be the respective work done, then: A gas is expanded to double its volume by two different processes. One is isobaric and the Other is isothermal. Let W1 ​and W2 ​be [...]