QJEEM17Ph8d62: JEE Main 2017 Physics - Class 11 JEEM17Ph8d62 Solution: An ideal gas has molecules with 5 degrees of freedom. The ratio …

Question

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An ideal gas has molecules with 5 degrees of freedom. The ratio of specific heats at constant pressure (C_p ) and at constant volume (C_v) is :

Accepted Answer

For ideal gas molecule with 5 degree of freedom,

C_v =

{5 \over 2}

R and C_p =

{7 \over 2}

R

\therefore\,\,\,

{{{C_p}} \over {{C_v}}}

=

{{{7 \over 2}R} \over {{5 \over 2}R}}

=

{7 \over 5}

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