IIT JEE , AIEEE Forum - Physics , Thermal Physics

amitp91

column I                                                      column II
(A)isothermal expansion                       (P)dQ>0
(B)isothermal compression                   (Q)dQ<0
(C)adiabatic expansion                         (R) dW>0
(D)free expansion                                 (S) dU=0

Ronaldooo

1>p,r,s
2>q,s
3>r
4>p,r
Am i correct???I aint sure about free expansion.

pottermania1990

A-P,R,S
B-Q,S
C-R
S-S

IN FREE EXPANSION Pext = 0..WORK DONE IS 0..

priyesh

a) - p) r) s)

b) - q) s)

c) r)

d) - s)

amitp91

i dont know the answers but my answer is

A-p,r,s
B-q,r,s
C-r
D-pr

deultimateevil

column I                                                      column II
(A)isothermal expansion                       (P)dQ>0
(B)isothermal compression                   (Q)dQ<0
(C)adiabatic expansion                         (R) dW>0
(D)free expansion                                 (S) dU=0

A. (R),(P),(S)
B. (S),(Q) [as dW<0]
C. (R)
D. (R)

priyesh

in free expansion dQ = 0 , dW = 0 dU = 0

sahilgupta_iit

A - (P,R,S)
B - (Q,S)
C - (R)
D - (S)

as in free expansion a gas expands freely without any given heat ( dq = 0) and no force is applied on/by the gas, so dW = 0. and by the first law of thermodynamics dU = 0.

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