Cp/cv For Monatomic
Ratio γ = Cp/Cv for monatomic ideal gas equals?
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About This Question
- Subject
- physics
- Chapter
- thermodynamics
- Topic
- cp/cv for monatomic
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
5/3
- Degrees of Freedom (f): A monatomic gas atom (like He, Ne) has 3 degrees of freedom (f=3, all translational).
- Specific Heats:
- Cv=2fR=23R.
- Cp=Cv+R=23R+R=25R.
- Ratio (γ):
- γ=CvCp=3/2R5/2R=35.
- Decimal form: ≈1.67. Note that diatomic gases (like O2) have γ=7/5=1.4.
This easy difficulty physics question is from the chapter thermodynamics, covering the topic of cp/cv for monatomic. It appeared in the 2025 exam.
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