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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Physics (PH)
Kinetic theory of gases
in this question why Cp is for monoatomic and CV is for rigid diatomic partical.What is theoretical logic behind it
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Paltu Sen
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here "molar sp. heat of a gas" is given..since things are not specified, there are a few possibilities- this value may be 1. Cp of monoatomic gas, or 2. Cv of monoatomic gas, or 3. Cp of diatomic gas, or 4. Cv of diatomic gas, or 5. Cp of triatomic gas, or 6. Cv of triatomic gas etc..... since options include only mono and di -atomic, only 1-4 possibilities can be taken.. Now it is found that only Cp of monoatomic gas equals 5R/2 and Cv of diatomic equals 5R/2. Cv of monoatomic has a value other than 5R/2 .Similarly Cp of diatomic gas not equals 5R/2. So only two possibilities 1 and 4 are taken
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Abhishek singh![best-answer]()
If you understand basics of degree of freedom and its relation with Cv and Cp then you will never be confused in this type of question. Here is the detailed discussion attached. Best regards.