Kinetic Theory - Result Question 31

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31. The molar specific heat at constant pressure of an ideal gas is $(7 / 2) R$. The ratio of specific heat at constant pressure to that at constant volume is

======= ####31. The molar specific heat at constant pressure of an ideal gas is $(7 / 2) R$. The ratio of specific heat at constant pressure to that at constant volume is

3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed:content/english/neet-pyq-chapterwise/physics/kinetic-theory/kinetic-theory—result-question-31.md (a) $8 / 7$

(b) $5 / 7$

(c) $9 / 7$

(d) $7 / 5$

[2006]

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Answer:

Correct Answer: 31. (d)

Solution:

(d) $C_P=\frac{7}{2} R ; C_V=C_P-R=\frac{7}{2} R-R=\frac{5}{2} R$

$\frac{C_P}{C_V}=\frac{7 / 2 R}{5 / 2 R}=\frac{7}{5}$