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JEE Advanced 2009Paper 1

Exam: JEE Advanced
Year: 2009
Paper: Paper 1
Subject: Physics
Chapter: Kinetic Theory of Gases

JEE Advanced 2009 · Paper 1 · Physics · Kinetic Theory of Gases

C_V and C_p denote the molar specific heat capacities of a gas at...

C_V

and

C_p

denote the molar specific heat capacities of a gas at constant volume and constant pressure, respectively. Then

Options

A $C_p-C_V$ is larger for a diatomic ideal gas than for a monoatomic ideal gas
B $C_p+C_V$ is larger for a diatomic ideal gas than for a monoatomic ideal gas.
C $\frac{C_p}{C_V}$ is larger for a diatomic ideal gas than for a monoatomic ideal gas
D $C_p \cdot C_V$ is larger for a diatomic ideal gas than for a monoatomic ideal gas

Correct answer

B. $C_p+C_V$ is larger for a diatomic ideal gas than for a monoatomic ideal gas.

Step-by-step solution

For monoatomic gas, C_p=

\frac{5}{2}

R

\text{ and }

C_V=

\frac{3}{2}

R For diatomic gas, C_p=

\frac{7}{2}

R

\text{ and }

C_V=

\frac{5}{2}

R

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