18. When an ideal gas (γ=5/3 ) is heated under constant pressure, then what percentage of given heat energy will be utilised in doing external work
(a) 40 % (b) 30 %
(c) 60 % (d) 20 %
Answer-a
(7)
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10. In pressure-volume diagram given below, the isochoric, isothermal, and isobaric parts respectively, are
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(a) BA, AD, DC (b) DC, CB, BA (c) AB, BC, CD (d) CD, DA, AB Explanation-(d) Process CD is isochoric as volume is constant, Process DA is isothermal as temperature constant and Process AB is isobaric as pressure is …