Prevost Theory of Heat Exchange
Category : JEE Main & Advanced
(1) Every body emits heat radiations at all finite temperature (Except 0 K) as well as it absorbs radiations from the surroundings.
(2) Exchange of energy along various bodies takes place via radiation.
(3) The process of heat exchange among various bodies is a continuous phenomenon.
(4) At absolute zero temperature \[(0\,\,K\,\,\text{or}\,\,-{{273}^{o}}C)\] this law is not applicable because at this temperature the heat exchange among various bodies ceases.
(5) If \[{{Q}_{emission}}>{{Q}_{absorbed}}\to \] temperature of body decreases and consequently the body appears colder.
If \[{{Q}_{emission}}<{{Q}_{absorbed}}\to \] temperature of body increases and it appears hotter.
If \[{{Q}_{emission}}={{Q}_{absorbed}}\to \]temperature of body remains constant (thermal equilibrium)
You need to login to perform this action.
You will be redirected in
3 sec
