NEET Physics: Questions 1523 - 1526 of 2099

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Question number: 1523

» 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: 1524

» 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: 1525

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

In changing the state of thermodynamics from A to B state, dg heat required is Q and the work done by the system is W. Tae change in its internal energy is

Choices

Choice (4) Response
a.

QW2

b.

Q

c.

QW

d.

Q+W

Question number: 1526

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

Which of the following statements is true?

Choices

Choice (4) Response
a.

The root mean square speed of the molecules of different ideal gases, maintained at the same temperature are the same

b.

Given sample of 1 cc of hydrogen and 1 cc of oxygen both at NTP; oxygen sample has a large number of molecules

c.

Two different gases at the same temperature and pressure have equal root mean square velocities.

d.

Absolute zero temperature is not zero energy temperature

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