Thermodynamics-Thermal Equilibrium (NEET Physics): Questions 6 - 9 of 16

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Question number: 6

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

For an isothermal expansion of a perfect gas, the value of PP is

Choices

Choice (4) Response

a.

VV

b.

γ2VV

c.

γ12VV

d.

γVV

Question number: 7

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

A monatomic gas (y=53) is suddenly compressed to of its original volume adiabatically, than the pressure of the gas will change to

Choices

Choice (4) Response

a.

245

b.

8

c.

32 times its initial pressure

d.

403

Question number: 8

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

In the diagrams (i) to (iv) of variation of volume with changing pressure is shown. A gas is taken along the path ABCD. The change in internal energy of the gas will be

graphs of volume vs pressure various patterns formed

Graphs of Volume vs Pressure Various Patterns Formed

In above figure we shows the four different, volume vs pressure graph.

Choices

Choice (4) Response

a.

Negative in cases (i), (ii) and (iii) but zero in case (iv)

b.

Positive in cases (i), (ii) and (iii) but zero in case (rv)

c.

Positive in all cases (i) to (iv)

d.

Zero in all cases

Question number: 9

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

Two Carnot engines A and B are operated in succession. The first one, A receives heat from a source at T 1 = 800 K and rejects to sink at T 2 K. The second engine B receives heat rejected by the first engine and rejects to another sink at T 3 =300K. If the work outputs of two engines are equal, then the value of T 2 will be

Choices

Choice (4) Response

a.

100K

b.

300K

c.

700 K

d.

550K

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