Two steel columns P (length L and yield strength fy = 250 MPa) and Q (length 2L and yield strength fy = 500 MPa) have the same cross-sections and end-conditions. The ratio of buckling load of column P to that of column Q is

Two steel columns P (length L and yield strength fy = 250 MPa) and Q (

1.	Two steel columns P (length L and yield strength fy = 250 MPa) and Q (length 2L and yield strength fy = 500 MPa) have the same cross-sections and end-conditions. The ratio of buckling load of column P to that of column Q is
A.	0.5
B.	1.0
C.	2.0
D.	4.0
Answer» E.

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Two steel columns P (length L and yield strength fy = 250 MPa) and Q (length 2L and yield strength fy = 500 MPa) have the same cross-sections and end-conditions. The ratio of buckling load of column P to that of column Q is

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