NEET Physics Thermodynamics Questions Solved


If γ denotes the ratio of two specific heats of a gas, the ratio of slopes of adiabatic and isothermal PV curves at their point of intersection is 

(1) 1γ

(2) γ

(3) γ-1

(4) γ+1

Concept Videos :-

#3 | Thermodynamic Processes
#4 | Isobaric Process
#5 | Isochoric & Isothermal Process
#6 | Interconversion of Graphs
#7 | Solved Example: 1
#8 | Solved Example: 2
#9 | Adiabatic Process
#10 | Solved Example: 3
#11 | Graphs in Adiabatic Process: 1
#12 | Graphs in Adiabatic Process: 2

Concept Questions :-

Types of processes

(2) Slope of adiabatic curve = γ × (Slope of isothermal curve)

Isothermal proccess : PV=constantDifferentiating, we get   PdV+VdP=0  Slope of isothermal curve dPdViso =-PV                      .........1Adiabtic process: PVγ=constantDifferentiating, we get   PγVγ-1 dV+Vγ dP=0 Slope of adiabatic curve dPdVadi = -γPV                        ............2 Ratio of slopes  dPdVadidPdViso=-γP/V-P/V=γ

Difficulty Level:

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