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  • When an ideal diatomic gas is heated at constant pressure the fraction of the heat energy supplied which increases the internal energy of the gas is :  <stro

When an ideal diatomic gas is heated at constant pressure the fraction of the heat energy supplied which increases the internal energy of the gas is :
 

Option: 1

\frac{2}{5}


 


Option: 2

\frac{3}{5}
 


Option: 3

\frac{3}{7}
 


Option: 4

\frac{5}{7}


Answers (1)

best_answer

The desired fraction is :

\mathrm{ \quad f=\frac{\Delta U}{\Delta Q}=\frac{n C_V \Delta T}{n C_P \Delta T}=\frac{C_V}{C_P}=\frac{1}{\gamma} }

\mathrm{ \text { or } \quad f=\frac{5}{7}\left(\text { as } \gamma=\frac{7}{5}\right) }

Hence option 4 is correct.



 

Posted by

Kuldeep Maurya

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