11. Three identical spheres, each of mass 1 kg are placed touching each other with their centres on a straight line. Their centres are marked K, L and M respectively. The distance of centre of mass of the system from K is
(a) (KL+KM+LM)/3
(b) (KL+KM)/3
(C) (KL+LM)/3
(d) (KM+LM)/3
Ans. b
(31)
4.8/5 - (20 votes)
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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 …