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Class XI Physics Thermodynamics 6

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Question 1

For the P-V diagram given for an ideal gas,

out of the following which one correctly represents the T-P diagram?

Question 2

The ratio of work done by an ideal monoatomic gas to the heat supplied to it in an isobaric process is:

Question 3

An ideal gas goes through a reversible cycle

has the V - T diagram shown below. Process

and

are adiabatic.

The corresponding P - V diagram for the process is (all figures are schematic and not drawn to scale)

Question 4

The equation of state for a gas is given by

where n is the number of moles and

is a positive constant. The initial temperature and pressure of one mole of the gas contained in a cylinder are

and

respectively. The work done by the gas when its temperature doubles isobarically will be :

Question 5

One metallic rod of length 40 cm has the coefficient of linear expansion α₁= 6 × 10^–6/ ºC. Another metallic rod of length l has the coefficient of linear expansion α₂= 4 × 10^–6/ ºC. If the difference in the lengths of the two rods always remains same at all temperatures, then the value of l is

Question 6

Choose the correct statement when an ideal monatomic gas is undergoing a cyclic process as shown in the figure.

Question 7

A certain mass of an ideal diatomic gas contained in a closed vessel is heated, it is observed that the temperature remains constant, however, half the amount of gas gets dissociated, the ratio of the heat supplied to the gas to the initial internal energy of the gas will be

Question 8

The molar heat capacity C of an ideal gas in a process is given by C = a/T, when ‘a’ is a constant. If

the work done by one mole of gas during heating from

through the same process will be

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