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Choose the most appropriate option.
A rigid bar of mass 15 kg is supported symmetrically by three wires each 2 m long. Those at each end are of copper and the middle one is of iron. Determine the ratio of their diameters if each is to have the tension.

A

`12.6 : 2`

B

`1.31 : 1`

C

`4.65 : 3`

D

`2.69 : 4`

Text Solution

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The correct Answer is:
B
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