Thermodynamics-Thermal Equilibrium (NEET Physics): Questions 10 - 14 of 16

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Question number: 10

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

A gas mixture consists of 2 moles of oxygen and 4 moles argon at temperature T neglecting all vibrational modes, the total internal energy of the system is

Choices

Choice (4) Response
a.

15 RT

b.

9 RT

c.

11 RT

d.

4 RT

Question number: 11

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

A monatomic gas (y=92) 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.

403

c.

8

d.

5 times its initial pressure

Question number: 12

» 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 r 1 = 700 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 r 3 = 300K. If the work outputs of two engines are equal, then the value of T 2 will be

Choices

Choice (4) Response
a.

700 K

b.

500K

c.

300K

d.

550K

Question number: 13

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

A gas mixture consists of 4 moles of oxygen and 10 moles argon at temperature T neglecting all vibrational modes, the total internal energy of the system is

Choices

Choice (4) Response
a.

29 RT

b.

25 RT

c.

15 RT

d.

11 RT

Question number: 14

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

A monoatomic ideal gas, initially at temperature T 1 is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature T 2 by releasing the piston suddenly. If I 1 and I 2 are the lengths of the gas column before and after expansion respectively, then T1T2 is given by

Choices

Choice (4) Response
a.

L1L2

b.

L2L1

c.

(L1L2)23

d.

(L2L1)23

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