Thermodynamics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 36 - 41 of 86

Visit this page to view all the question topics

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 36

» 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

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 37

» 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%

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 38

» Thermodynamics » Carnot Engine and Its Efficiency

MCQ▾

Question

The temperature of sink of Carnot engine is 27°C and Efficiency of engine is 50%. Then temperature of source

Choices

Choice (4) Response

a.

327°C

b.

227ºC

c.

127ºC

d.

27°C

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 39

» 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

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 40

» Thermodynamics » Concept of Temperature

MCQ▾

Question

A Carnot engine whose low temperature reservoir is at 7 C has an efficiency of 50%. It is desired to increase the efficiency to 70%. By how many degrees should the temperature of the high temperature reservoir be increased?

Choices

Choice (4) Response

a.

380K

b.

280 K

c.

840K

d.

560 K

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 41

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

A system is given 200 calories of heat and it does 600 joules of work. The internal energy of the system change in this process is (J = 4.18 Joule/cal)

Choices

Choice (4) Response

a.

- 236 Joule

b.

236.5 Joule

c.

-300 Joule

d.

236 Joule

To view these problems with solutions proceed here and click "Subscribe Now".