Thermodynamics (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 62  67 of 86
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Question number: 62
» Thermodynamics » Concept of Temperature
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. 


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Question number: 63
» Thermodynamics » Concept of Temperature
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 

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Question number: 64
» Thermodynamics » Concept of Temperature
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 

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Question number: 65
» Thermodynamics » Concept of Temperature
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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Question number: 66
» Thermodynamics » Concept of Temperature
Question
How much work to be done in decreasing the volume of and ideal gas by an amount of 1.4 × 10 ^{4} m ^{3} at normal temperature and constant normal pressure of 1 × 10 ^{5}N/ m ^{2}
Choices
Choice (4)  Response  

a.  14 Joule 

b.  28 Joule 

c.  25 Joule 

d.  27 Joule 

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Question number: 67
» Thermodynamics » Thermal Equilibrium
Question
A monoatomic ideal gas, initially at temperature T _{1} is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature T _{2 } by releasing the piston suddenly. If I _{1 } and I _{2} are the lengths of the gas column before and after expansion respectively, then is given by
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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