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11.Thermodynamics
normal

એક આણ્વીય વાયુને દબાણ અચળ રાખીને ઉષ્મા $Q$ આપવામાં આવે છે તો વાયુ દ્વારા થતું કાર્ય....$?$

A

$\frac{2}{3}\, Q$

B

$\frac{3}{5}\, Q$

C

$\frac{2}{5}\, Q$

D

$\frac{1}{5}\, Q$

Solution

$\Delta Q\,\, = \,\,\Delta U + \Delta W\, \Rightarrow \,\Delta W\,\, = \,\,{(\Delta Q)_p} – \Delta U\,\,$

$ = \,\,{(\Delta Q)_p}\,\left[ {1 – \frac{{{{(\Delta Q)}_V}}}{{{{(\Delta Q)}_p}}}} \right] = \,\,{(\Delta Q)_p}\,\left[ {1 – \frac{{{C_V}}}{{{C_p}}}} \right]\,\, = \,\,Q\,\left[ {1 – \frac{3}{5}} \right]\,\, = \,\,\frac{2}{5}Q$

$\therefore$ એક આણ્વીય માટે ${(\Delta Q)_P}\,\, = \,\,Q,\,\,\gamma \,\, = \,\,\frac{5}{3}\,)$

Standard 11
Physics

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