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Q.

Force constants of two wires A and B of the same material are k and 2k respectively. If the two wires are stretched equally, then the ratio of work done in stretching (WA/WB) is

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a

12

b

14

c

13

d

32

answer is C.

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Detailed Solution

When strain are equal work done is directly proportional to force  constant.

work done -(1/2)kx2

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