The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?

Option A length = 300 cm, diameter = 3 mm
Option B length = 50 cm, diameter = 0.5 mm
Option C length = 100cm, diameter = 1 mm
Option D length = 200 cm, diameter = 2 mm

Solution

The correct option is Option B.

After making all the comparisons, the most appropriate choice is for ℓ = 50 cm & diameter = 0.5 mm