Question

Heat energy of 735J is given to a diatomic gas allowing the gas to expand at constant pressure Each gas molecule rotates around an internal axis but do not oscillate The increase in the intemal energy of the gas will be :

• A. 572J
• B. 735J
• C. 441J
• D. 525J

Answer 1

Answer: (C)

441J

Answer 2

$\triangle{Q}nC_p\triangle{T}=735 J$
$=\frac{3}{2}\times\frac{2}{5}\times 735$
=441 J
So , the correct option is (C) : 441 J