11.Thermodynamics
easy

નીચે આપેલી ચક્રીય પ્રક્રિયા માટે ખરું વિધાન કયું છે.

A

$ \Delta {E_{{\mathop{\rm int}} }} = 0,\,Q < O $

B

$ \Delta {E_{{\mathop{\rm int}} }} = 0,\,Q > 0 $

C

$ \Delta \,{E_{{\mathop{\rm int}} }} > 0,\,Q < 0 $

D

$ \Delta \,{E_{{\mathop{\rm int}} }} < 0,\,Q > \,0 $

Solution

(a) $\Delta {E_{{\rm{int}}}} = 0$,

for a complete cycle and for given cycle work done is negative,

so from first law of thermodynamics $Q$ will be negative i.e. $Q < 0$.

Standard 11
Physics

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