Multiple choice

The Young's modulus of a wire of of length L and radius r is Y Nm2. If the length is reduced to L/2, and radius r/2, its Young's modulus will be

  1. Y/2

  2. Y

  3. 2Y

  4. 4Y

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Young's modulus is an intrinsic material property that depends on the material itself, not on the dimensions of the object (length or radius). Therefore, changing the length or radius does not change the Young's modulus.