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Heat and Thermodynamics question

2010 · Q91
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Heat and Thermodynamics question

2010 · Q91

NEETPhysicsHeat and ThermodynamicsMCQ+4 / −1
If cp and cv denote the specific heats (per unit mass of an ideal gas of molecular weight M, then
  1. A
    cp −-− cv = R/M2
  2. B
    cp −-− cv = R
  3. C
    cp −-− cv = R/M
  4. D
    cp −-− cv = MR
View written solutionFree

Correct answer: C

Cv = molar specific heat of the ideal gas at constant volume

Cp = molar specific heat of the ideal gas at constant pressure,

Cp' = MCp and Cv’ = MCv

Also Cp′−Cv′=R{C_p}' - {C_v}' = RCp​′−Cv​′=R

MCp – MCv = R

Cp – Cv = R/M

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