Two steel wires having same length are suspended from a ceiling under the same load

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Two steel wires having same length are suspended from a ceiling under the same load. If the ratio of their energy stored per unit volume is

1 : 4

, the ratio of their diameters is: (1)

\sqrt{2} : 1

(2)

1 : 2

(3)

2 : 1

(4)

1 : \sqrt{2}