Question 974: Thermodynamics & KTG

Question

If $\Delta $U and $\Delta $W represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which of the following is true ?

Accepted Answer

By first law of thermodynamics,
$\Delta Q = \Delta U + \Delta W$
In adiabatic process, $\Delta Q = 0$
$ 	herefore $ $\Delta U =  - \Delta W$
In isothermal process, $\Delta U = 0$
$ 	herefore $ $\Delta Q = \Delta W$

Answer

$\Delta $U = $-$$\Delta $W, in an adiabtic process

Answer

$\Delta $U = $\Delta $W, in an isothermal process

Answer

$\Delta $U = $\Delta $W, in an adiabatic process

Answer

$\Delta $U = $-$ $\Delta $W, in an isothermal process

Thermodynamics & KTG

If \Delta U and \Delta W represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which of the following is true ?

Choose the correct answer: