MCQ
The maximum load a wire can withstand without breaking, when its length is reduced to half of its original length, will
  • A
    Be double.
  • B
    Be half.
  • C
    Be four times.
  • D
    Remain same.

Answer

  1. Remain same.

Explanation:

$\text{Breaking stress}=\frac{\text{Breaking force}}{\text{Area of cross - section}}$

Since breaking force doesn't depend on length, hence changing the cross section has no effect.

So the breaking force remain same.

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