A and B are two wires. The radius of A is twice that of B. They are stretched by the same load. Then the stress on B is

A and B are two wires. The radius of A is twice that of B. They are st

1.	A and B are two wires. The radius of A is twice that of B. They are stretched by the same load. Then the stress on B is
A.	equal to that on A
B.	four times that on A
C.	two times that on A
D.	half that on A
Answer» C. two times that on A