Question

19. The variation of pressure P with volume V for an
ideal monatomic gas during an adiabatic process
is shown in figure. At point A the magnitude of rate
of change of pressure with volume is​

Answer 1

Answer:

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This is an upright parabola, so the equation is P = kV  2

 By Ideal gas equation,

P = nRT /V

So, nRT /V = kV  2

nRT = kV  3

By first law,

dQ = dU + PdV

Let the heat capacity of the gas in this process be C, dQ = nC dT

for diatomic gas, C v =5R /2

C= C v =5 R /2+C v  = R/3 =  Cv  = 17R /6