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प्रश्न
Write the mathematical equation for the first law of thermodynamics for:
Isothermal process
Deduce the first law of thermodynamics for the isothermal process.
उत्तर
For isothermal process:
For a given temperature (T) and internal energy (U) of the remains constant.
∴ ΔT = 0
∴ ΔU = 0
First law of thermodynamic
ΔU = Q + W
0 = Q + W ...(∵ ΔU = 0)
∴ Q = – W
संबंधित प्रश्न
Refer to figure. Let ∆U1 and ∆U2 be the change in internal energy in processes A and B respectively, ∆Q be the net heat given to the system in process A + B and ∆W be the net work done by the system in the process A + B.
(a) ∆U1 + ∆U2 = 0
(b) ∆U1 − ∆U2 = 0
(c) ∆Q − ∆W = 0
(d) ∆Q + ∆W = 0
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