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A uniform steel rope 400 metres long is hung vertically. The weight of the steel is 7.8 gm/cm3 and D = 2100 kg/mm2. The ratio of elongation of first 150 metres to that of first 300 metres would be

[A].	16 ; 1	[B].	4 ; 1
[C].	2 ; 1	[D].	1 ; 2
[E].	1 ; 4

Answer: Option E

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