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The stress for elastic limit of a materi...

The stress for elastic limit of a material is `3.5 times 10^8 Nm^-2`. The minimum diameter of a rod made of this material which can support 500 N load without exceeding elastic limit will be :

A

1.35 cm

B

1.35 mm

C

`1.35 times 10^-6 m`

D

2 mm

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