28. Which of the following is true for elastic potential energy density
(a) Energy density =(1/2)×strain×stress
(b) Energy density =(strain) 2 × volume
(c) Energy density = (strain)× volume
(d) Energy density = (stress)× volume
Answer-a
(16)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (126)