# NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1522 - 1525 of 2142

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## Question number: 1522

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: 1523

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: 1524

» 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.

b.

c.

d.

## Question number: 1525

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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