IIT JEE 2008 P1 Q28

that is PT2

9 Answers

11
Mani Pal Singh ·

sir dikh nahin raha please make it clear

13
Двҥїяuρ now in medical c ·

3/T

PT2=constant

from ideal gas eqn T3/V= contant

dV/VdT=3/T

1
gsns gannavarapu ·

me 2 gtin 3/T

1
gsns gannavarapu ·

sir i did it dis way

T3/V = constant

soo

T13 /V1 = T23/V2

and V2 = V1 (1+r (T2 - T 1))

ON SOLVIN
r = (T12 + T22 + T1T2 )/T23

AND REPLACIN T1 AND T2 AS T

WE GT r=3/T

62
Lokesh Verma ·

you have got the answer but i am afraid this is not the right method....

you have to do it from the first principle which abhirup used..

thsi one worked for this question but will fail for many many other questions!

1
gsns gannavarapu ·

sir can u pls xplain how abhirup solved it
i m unable 2 understand it

13
Двҥїяuρ now in medical c ·

@ gsns

just differentiate T3/V=k

i m too lazy 2 rite all the steps...

find
dV/VdT

62
Lokesh Verma ·

T3/V=k
T3=kV

3T2 = k dV/dT

k=T3/V

substitute back

you will get the form of abhirup

1
gsns gannavarapu ·

thx a lot sir

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