1.

The breaking force for a wire is F. The breakingforces for a single wire of double thickness is(2) 2 F(4) 0.5F(3) 4 F

Answer»

Stress = F/A

=> when A→2A

F should be twice → 2F

option 2

answer is opt. 3

breaking force of wire is F . breaking force of single wire i.e. F of double thickness i.e.2 will be breaking force =2F

but i think option 2 is fair enough.. check your answer again.

umm...ansr is 4F.... i have checked it again



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