IIT 2005

When one mole of monoatomic gas at T K undergoes adiabatic change under a constant external pressure of 1 atm changes volume from 1 L to 2 L.The fianl temperature in Kelvin would be
A. \frac{T}{2^{2/3}}

B. T + 2/3 * 0.0821

C. T

D. T - 2/3 * 0.0821

4 Answers

1
Anirudh Kumar ·

A )
using

TV^{\gamma -1}=constant

1
Avinav Prakash ·

FOR ADIA BATIC PROCESS......PVγ=CONSTANT
TVγ-1=K

MONOATOMIC GASES HAVE γ=5/3

T*1=T2*22/3

T2=T/22/3.........(A)

106
Asish Mahapatra ·

guys ... look at the wording of the question...

think its a bit ambiguous...

under a constant external pressure this is also there....

so i dont think (quoting BT solution in my own way)... that we can apply PVγ = c

11
Gone.. ·

Ans given by fiitjee is also A(like anirudh and avinav),,but i was having a doubt.

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