NEET-XII-Physics
26: Laws of Thermodynamics
- #6Consider the following two statements.
(A) If heat is added to a system, its temperature must increase.
(B) If positive work is done by a system in a thermodynamic process, its volume must increase.
(a) Both A and B are correct.
(b) A is correct but B is wrong.
(c) B is correct but A is wrong.
(d) Both A and B are wrong.digAnsr: cAns : (c) B is correct but A is wrong.
If heat is added to a system in an isothermal process, then there'll be no change in the temperature.
`` \,\mathrm{\,Work\,}\,\mathrm{\,done\,}\,\mathrm{\,by\,}\,\mathrm{\,a\,}\,\mathrm{\,system\,},∆W=P∆V``
`` \Rightarrow ∆W=\,\mathrm{\,positive\,}\Rightarrow ∆V=\,\mathrm{\,positive\,}``
Here,
P = Pressure
`` ∆``V = change in volume
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