Question

The radius of wire stretched by a load is halved then its young's modulus will be:

• A. Half
• B. Unaffected
• C. Doubled
• D. Become four times

Answer 1

Answer:

B. Unaffected

Young's modulus is a material's property and is denoted by Y. It does not depend on the length of the radius of the wire and is constant for the material. Therefore, if the radius of the wire is changed by a load to its half, the Young's modulus will be unaffected.