sir please answer
Asked by minipkda
24th May 2018,
11:50 AM
Answered by Expert
Answer:
ideal gas equations for initial state and final state are given by
P0×V0 = R×T0 .....................(1)
Pf×Vf = R×Tf ........................(2)
we are given that Vf = 2×V0 ....................(3)
As by the given process equation
Pf = P0 / [ 1+(1/2)2 ] = (4/5)P0 ........................(4)
using (3) and (4)
Pf×Vf = (4/5)P0×2(V0) = (8/5) P0V0 ...................(5)
From (2) and (5) we write for final temperature
Tf = (8/5)(P0V0) / R ...........................................(6)
From eqns. (1) and (6), we get change in temperature = T0 - Tf = { P0V0/R } [ 1 - (8/5) ] = (-3/5){ P0V0/R }
(Hope i did algebra correctly. But I am not getting the answer matching with the given options in the question )
Answered by Expert
24th May 2018,
3:13 PM
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