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HomePhysics14. The Young’s modulus of a wire is Y. If the energy per unit volume is E, then the strain will be

14. The Young’s modulus of a wire is Y. If the energy per unit volume is E, then the strain will be

(a)  √(2E)/Y                                                     (b) √(2E)

(c)   EY                                                               (d)  E/Y

Answer-a

(8)

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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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