Two wires ?A? and ?B? of the same material have radii in the ratio 2 : – McqOptions

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1.	Two wires ?A? and ?B? of the same material have radii in the ratio 2 : 1 and lengths in the ratio 4 : 1. The ratio of the normal forces required to produce the same change in the lengths of these two wires is [Haryana CEE 1996]
A.	0.0423611111111111
B.	2 : 1
C.	1 : 4
D.	1 : 2
Answer» B. 2 : 1

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