Thermodynamics-Concept of Temperature (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 12 - 17 of 36

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Question number: 12

» Thermodynamics » Concept of Temperature

MCQ▾

Question

One mole of an ideal gas at an initial temperature of does 6 R joules of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume is , the final temperature of gas will be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 13

» Thermodynamics » Concept of Temperature

MCQ▾

Question

An ideal gas expands in such a manner that its pressure and volume can be related by equation PV 2 = constant. During this process, the gas is

Choices

Choice (4) Response

a.

Heated

b.

Cooled

c.

First heated and then cooled

d.

Neither heated nor cooled

Question number: 14

» Thermodynamics » Concept of Temperature

MCQ▾

Question

Helium at 27° has a volume of 8 litres. It is suddenly compressed to a volume of 1 litre. The temperature of the gas will be

Choices

Choice (4) Response

a.

1200°C

b.

9327°C

c.

108°C

d.

927°C

Question number: 15

» Thermodynamics » Concept of Temperature

MCQ▾

Question

Helium at 27° has a volume of 27 litres. It is suddenly compressed to a volume of 1 litre. The temperature of the gas will be

Choices

Choice (4) Response

a.

9327°C

b.

2700°C

c.

1200°C

d.

108°C

Question number: 16

» Thermodynamics » Concept of Temperature

MCQ▾

Question

The efficiency of Carnot’s engine operating between reservoirs, maintained at temperatures 27 C and -123 C,

Choices

Choice (4) Response

a.

0.4%

b.

0.75%

c.

50%

d.

24%

Question number: 17

» Thermodynamics » Concept of Temperature

MCQ▾

Question

Eight moles of an ideal gas performs a cycle shown in figure. If the temperature T A = 1200 K, T B = 1600 K, T c = 4400 K and T D = 2400 K, the work done per

Choices

Choice (4) Response

a.

120 kJ

b.

160 KJ

c.

106 kJ

d.

139 kJ

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