Thermodynamics-Concept of Temperature (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 23 - 28 of 36

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Question number: 23

» Thermodynamics » Concept of Temperature

MCQ▾

Question

The efficiency of Carnot’s engine operating between reservoirs, maintained at temperatures 27 degree Celsius and -113 degree Celsius

Choices

Choice (4) Response

a.

0.4%

b.

50%

c.

0.75%

d.

46%

Question number: 24

» Thermodynamics » Concept of Temperature

MCQ▾

Question

An ideal gas at 25°C is compressed adiabatically to of its original volume. If , then the rise in temperature,

Choices

Choice (4) Response

a.

530 K

b.

225 K

c.

405 K

d.

375 K

Question number: 25

» Thermodynamics » Concept of Temperature

MCQ▾

Question

One mole of a perfect gas in a cylinder fitted with a piston has a pressure P . volume V and temperature T. If the temperature is increased by 2 K keeping pressure constant, the increase in volume is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 26

» Thermodynamics » Concept of Temperature

MCQ▾

Question

If 300 ml of gas at 17°C is cooled to 7°C at constant pressure, then its final volume will be,

Choices

Choice (4) Response

a.

540.23 ml

b.

289.65 ml

c.

135.35 ml

d.

280.45 ml

Question number: 27

» Thermodynamics » Concept of Temperature

MCQ▾

Question

Efficiency of a Carnot engine is 50 % when temperature of outlet is 500 K. In order to increase efficiency up to 60 % keeping temperature of intake the same what will be temperature of outlet

Choices

Choice (4) Response

a.

200 K

b.

600 K

c.

800 K

d.

400 K

Question number: 28

» Thermodynamics » Concept of Temperature

MCQ▾

Question

The temperature of sink of Carnot engine is 27°C and Efficiency of engine is 25%. Then temperature of source

Choices

Choice (4) Response

a.

127°C

b.

327°C

c.

27ºC

d.

227ºC

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