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Grade: 12
        A monoatomic gas undergoes a process in which the ratio of P to V at any instant is constant and equals to 1. What is the molar heat capacity of the gas??


Options:
A)4R/2 B)3R/2 C)5r/2 D)0
10 years ago

Answers : (4)

mohit yadav
24 Points
							

HI

I THINK DA ANSWER 2 DIS QUESTION IZ [A]4R/2

DIS IZ AN ISOTROPIC PROCESS (defiined as process in which PV*=constant hereV*meansV ki power x)AND FORMULA OF MOLAR HEAT CAPACITY FOR SUCH A PROCESS IZ=R/y-1-R/x-1 y=5/3 for a monoatomic ideal gas and here P/V=CONSTANT SO x=-1 so ANSWER=3R/2-(-R/2)=4R/2. U CAN FIND DERIVATION OF DIS FORMULA IN HCV . PLZ REPLY ME IF D ANSWER IS CORRECT OR NOT.

10 years ago
ShipWreck GrimJaw
8 Points
							

Thanks very much Mohit. The answer is A) 4R/2. But could you please tell me what you exactly meant by HCV and where exactly to look.

 

 

                                          

10 years ago
mohit yadav
24 Points
							

HI

HCV means Physics book of HC VERMA ,refer dere 2 get dis formula ,available may b in ur school library or buy this book as dis iz d best book 2 refer for IIT-JEE  refer 2 volume-2 of HCV.U will surely enjoy reading dat book .U may also refer to some physical chemistry book.

BEST OF LUCK 2 U FOR UR ENTRANCE EXAMS.

10 years ago
Brijesh Rohit
5 Points
							
For a polytropic process
Cm = Cvm + R/(1-x) 
where x is the polytropic index. Given that
P/V =1 hence x=-1,
Therefore Cm= 3R/2 + R/[1-(1)]  = 2R.
7 months ago
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  • Discussion Forum
  • Previous Year Exam Questions


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