4. Two wires of same diameter of the same material having the length l and 2l. If the force F is applied on each, the ratio of the work done in the two wires will be
(a) 1 : 2 (b) 1 : 4
(c) 2 : 1 (d) 1 : 1
Answer-a
(20)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)