IIT JEE , AIEEE Forum - Physics , Thermal Physics

arvindpu

how latent heat vary with pressure?

vineet

as pressure increases latent heat decreases

gajju

Yes it inceases with decrease in pressure

nishant

hey hi! u see latent heat is given by the formula L=KA(t1-t2)/d m.. here A is the area..now,pressure(P)=F/A...so,frm the above two relations,we see that pressure is inversely proportional to latent heat and therefore latent heat increases when pressure is decreased and vice-versa..hope this helps..cheers!!

iitkgp_bipin

As we increase pressure the molecules come closer and closer and the potential energies of interactions between the molecules contribute to its heat capacity.Hence latent heat is reduced.

tejasvi2389

see latent heat means heat hidden inside the body so when we increase the pressure as molecules come close so the molecules come close and so if it is gas assume it becomes liquid and as you kno that burns caused by steam are more severe than burns caused by boiling water it implies that gas has more temp that water (liquid) therefore temp decreases and hence latent heat decreses.

raghu_pratoori

inversely

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