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HomePhysics18. On stretching a wire, the elastic energy stored per unit volume is

18. On stretching a wire, the elastic energy stored per unit volume is

(a)  Fl/2AL                                              (b)  FA/2L

(c)  FL/2A                                               (d)  FL/2

Answer-a

(10)

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12. An ideal gas is taken through the cycle A→ B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is

(a)      – 5 J (b)  – 10 J (c)   – 15 J (d)  – 20 J Answer-a (126)

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