Question

A wire can sustain a weight of $20\text{kg}$ before breaking. If the wire is cut into two equal parts, each part can sustain a weight of

• A. $10\text{kg}$
• B. $20\text{kg}$
• C. $05\text{kg}$
• D. $25\text{kg}$
  

Answer 1

The correct option is B $20\text{kg}$

The stress at which the wire can break or rupture is called breaking stress. This is an intrinsic property of the material and depends only on the nature of material.
Here, breaking stress of wire corresponds to the weight of $20\text{kg}$ mass.


As the wire is cut into two equal parts, the nature of the material does not change. Hence, its breaking stress will not change.
i.e each part of the wire can sustain a weight of $20\text{kg}$ mass.